Browsing by Author "Joseph, P A"

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Daincha as an organic source of nutrients for rice
(Kerala Agricultural University, 1986) Joseph, P A
Different methods of growing rice in different seasons
(Kerala Agricultural University, 1988) Joseph, P A; Sasidhar, V K; Aravindakshan, K; Babylatha, A K; Pushpakumari, R
Drip irrigation and mulching in oriental pickling melon
(Department of Agronomy, College of Horticulture, Vellenikkara, 2001) Alemayehu Ambaye Gebremedhin; Joseph, P A
Effect of N, P and K on the growth and yield of chilli, variety pant C1
(Kerala Agricultural University, 1985) Joseph, P A; Balakrishna Pillai, P
An experiment was conducted at the Instructional Farm of the College of Horticulture, Vellanikkara to study th-j effect of different levels of N, P and K on the yield of chilli variety, Pant C1 during rainfed and irrigated seasons. The most economic levels of N, P_05 and K.,O were found to bs 92:52:39 and 90:52:26 kg/ha respectively for the rainfed and irrigated chilli crops. By spending an additional cost of Rs. 16.36 on two kg N and 4 kg K.,0 for the cultivation of chilli during the rainfed season compared to the cost of cultivation of chilli during irrigated season, an additional income of Rs. 3798 could be obtained. Cultivation of chilli variety Pant C1 is thus highly profitable during the rainfed season from May to September compared to the irrigated crop from November to February.
Fertigation and mulching in oriental pickling melon (Cucumis melo var. conomon (L.) Makino) under high density planting
(Department of Agronomy,Vellanikkara, 2016) Ashly, P; Joseph, P A
Fertigation in oriental pickling melon (Cucumis melo var.conomon (L) Makino) under high density planting
(Department of agronomy, College of horticulture, Vellanikkara, 2013) Ningaraju, G K; Joseph, P A
Irrigation management related to sub-surface moisture conservation techniques in oriental pickling melon
(Department of Agronomy, College of Horticulture, Vellenikkara, 1996) Veeraputhiran, R; Joseph, P A
An experiment was conducted in the summer rice fallows during 1996 at Agricultural Research Station, Mannuthy to study the irrigation management related to sub-surface moisture conservation techniques in oriental pickling melon. The experiment was laid out in randomised block design with three replications. The treatments consisted of combinations of four moisture conservation techniques (control, incorporation of sawdust, paddy waste and coir pith @ 1/3rd pit volume) and four levels of irrigation (IW/CPE ratio of 0.4, 0.8, 1.2 and at critical stages). The study revealed that incorporation of moisture conservation materials increased the growth attributes like length of vine, number of leaves per vine, leaf area, leaf area index and dry matter production and yield attributes like length, girth, weight of fruits and number of fruits per plant. Among the moisture conservation materials paddy waste was found to be the best for incorporation followed by coir pith. The increase in the number of fruits per plant and yield per hectare over control was 30 and 27 per cent respectively by paddy waste incorporation, whereas for coir pith incorporation this increase was 13 and 17 per cent respectively. Oriental pickling melon responded very well to irrigation. Biometric characters (length of vine, number of leaves per vine, leaf area, leaf area index, drymatter production) and yield attributing characters (length, girth, weight of fruits and number of fruits per plant) were favourably influenced by frequent irrigations. The fruit yield increased with increase in frequency of irrigation and was maximum at IW/CPE ratio of 1.2. The interaction effect was found to be significant on growth attributes and yield. It also indicated that the significant effects of moisture conservation materials were pronounced only at closer intervals or irrigation (IW/CPE 0.8 and 1.2) and were more pronounced at the activity growing stages ie. after 45 DAS. Incorporation of moisture conservation materials increased the soil moisture content, consumptive use and water use efficiency. Total consumptive use increased with increase in irrigation frequency. Drier regimes showed a tendency to extract more moisture from deeper layers. The peak consumptive use and crop coefficient were reached maximum between 36-50 and 51-65 DAS respectively. Soil moisture extraction pattern showed that oriental pickling melon on an average depleted 50.7 per cent of the total water use from the top 15 cm layer. Field and crop water use efficiency were higher in less frequently irrigated treatments. N,P and K content of the leaves were enhanced by frequent irrigation and incorporation of paddy waste. Incorporation of paddy waste and coir pith increased the net profit to the tune of 68 per cent respectively over control. Scheduling irrigation at IW/CPE ratio 1.2 was economically better than other irrigation treatments. The combination of moisture conservation techniques and levels of irrigation further increased the net profit and net return per rupee invested over the individual effects. Best net profit was obtained when the crop was irrigated at the IW/CPE ratio of 1.2 with the incorporation of paddy waste. If water is scarce for irrigation, incorporation of paddy waste or coir pith and irrigation at IW/CPE ratio 0.8 was highly beneficial than crops at the closer interval of IW/CPE ratio 1.2 without any moisture conservation material.
Irrigation scheduling and moisture conservation in water melon
(Department of Agronomy, College of Horticulture, Vellanikkara, 2000) Ajith, CB; Joseph, P A
An experiment was conducted at the Agricultural Research Station, Mannuthy, Thrissur during the period from December 1998 to March 1999 to study the influence of levels of irrigation and moisture conservation methods on the growth and yield of water melon (Citrullus fanatus) grown in rice fallows. The experiment was laid out in randomized block design with three replications. The treatments consisted of combinations of four moisture conservation methods (control, application of paddy waste as surface mulch, uniform incorporation and bottom layer application @ 1/3 pit volume) and four levels of irrigation (IW /CPE ratio of 0.6, 1, 1.4 and farmer's practice of daily irrigation @ 20 lit pit"), The study revealed that incorporation of moisture conservation materials increased the growth attributes like length of vine, number of leaves per vine, leaf area and dry matter production and yield attributes like weight of fruits and number of fruits per plant. Among moisture conservation methods surface mulch and uniform incorporation of paddy waste were found to be superior in most of the cases. Watermelon responded very well to irrigation. Biometric characters (length of vine, number of leaves per vine, leaf area and dry matter production) and yield attributing characters (weight of fruits and number of fruits per plant) were favourably influenced by frequent irrigations. The fruit yield increased with increase in frequency of irrigation and was maximum at IW /CPE ratio of 1.4. Results of soil moisture studies revealed that incorporation of moisture conservation material' increased the soil moisture content, consumptive use and water use efficiency. The consumptive use increased with the frequency of irrigation. The top 15 cm of the soil layer accounted for the highest soil moisture depletion. The depletion was more from the deeper layers in the drier regimes. Field and crop-water use efficiencies were higher in less frequently irrigated treatments. Higher levels of irrigation increased N, P and K content of leaves. No convincing change in leaf N, P, K content could be brought about by the incorporation of paddy waste. Economic analysis showed that incorporation of paddy waste could increase the net profit. Net profit as well as net return per rupee invested were the highest with scheduling irrigation at IW/CPE ratio of 1.4. Among the treatment combinations, the best combination was surface application of paddy waste with irrigation at IW/CPE ratio of 1.4 followed by the combination of surface mulching and fanner's practice of daily irrigation.
Micro irrigation and polythene mulching in oriental pickling melon
(Department of Agronomy, College of Horticulture, Vellanikkara, 2009) Anoop, N C; Joseph, P A
A field experiment on micro irrigation and polythene mulching in oriental pickling melon (Cucumis melo var. conomon (L.) Makino) was conducted during the summer season of December 2004 to March 2005 in the summer rice fallows of Agricultural Research Station, Mannuthy, Thrissur. The experiment was laid out in Randomized Block Design (RBD) with three replications. The treatments consisted of combinations of five irrigation methods (drip, microtube, bubbler, wick and basin irrigations) and three mulch treatments (control, black LDPE mulching in the basin and in the entire interspace). The variety used in the study was Mudicode. The study revealed that mulching with black LDPE enhanced soil moisture retention in soil, growth, yield, water use efficiency and economic parameters than control. Mulching in the entire interspace with black LDPE was superior to basin mulching alone. Number of branches per vine, length of vines, number of leaves per vine, leaf area and dry matter production at harvest were highest in full mulching. Similarly, full mulching with black LDPE recorded the highest male and female flowers per plant and female to male flower ratio. In the setting percentage, basin mulching recorded 10 per cent more setting over control, while full mulching increased it by five per cent. Mulch had no significant influence on fruit characteristics like mean fruit weight, girth and volume. Full mulching enhanced number of fruits per plant by 27 per cent and basin mulching by 20.5 per cent over control. While full mulching increased fruit yield per hectare by 28 per cent over control, basin mulching increased it over control by 20 percent. Full mulching checks weed growth by 100 percent and enhanced leaf contents of N and K. Due to checking of evaporation from soil, soil moisture content was higher by 8.3 to 16.7 per cent laterally to a distance of 60 cm from the centre of the pit and higher by 10.6 to 14.2 per cent depth wise to a depth of 60 cm over control. Mean seasonal consumptive use and crop coefficient values were the least in full mulched plots. Full mulching and basin mulching increased field water use efficiency by 28.0 and 20.0 and crop water use efficiency by 40.8 and 30.8 per cent, respectively over control. Economic analysis revealed that net profit increased by Rs. 51,838 (33.4 per cent) and Rs. 40,787 (26.3 per cent) by full mulching and basin mulching, respectively over control. Among the irrigation methods, oriental pickling melon responded best to wick method. Though basin irrigation promoted better vegetative characters, its favourable influence on yield characters were not visible. Wick irrigation recorded higher fruit setting percentage than other methods. Though basin irrigation recorded 12.6 to 33.8 per cent more fruits per plant than other methods, average fruit weight was significantly the lowest in basin method. Wick irrigation recorded the highest mean fruit weight of 1236 g while basin irrigation recorded the lowest weight of 963.5 g. Highest fruit yield was recorded in wick irrigation (46.34 t ha-1) followed by microtube method (42.75 t ha-1) and basin irrigation (40.97 t ha-1). Though basin irrigation retained higher moisture in soil, radially as well depth wise compared to other methods it was not reflected in fruit yield. Though basin irrigation recorded the lowest mean seasonal consumptive use, it recorded the lowest FWUE. Wick irrigation recorded the highest net return (Rs. 2,13,306 ha-1) and net income per rupee invested (3.29). The combination of mulching with black LDPE and irrigation methods increased fruit yield, water use efficiency, net profit and net return per rupee invested over the individual effects of irrigation. Best fruit yield and net profit were obtained when wick irrigation was combined with mulching with entire interspace with black LDPE.
Nelkrushi
(Kerala Agricultural University, 2015) Joseph, P A
Nitrogen phosphorus and potassium requirements of chilli (Capsicum annuum L.) variety pant C-1
(Department of Agronomy, College of Horticulture, Vellanikkara, 1982) Joseph, P A; Balakrishna Pillai, P
Field experiments were conducted at the Instructional Farm, Vellanikkara during the periods from May to September 1981 and November 1981to February 1982 to study the effects of graded doses of nitrogen, phosphorus and potassium on the growth and yield of chilli variety Pant. C.1 in two seasons.
Vividhatharam valangalum avayude upayogavum
(Kerala Agricultural University, 1993) Joseph, P A
Weed management in ginger (Zingiber officinale Rosc.)
(Department of Agronomy, College of Horticulture, Vellanikkara, 2015) Asha V Pillai; Joseph, P A
Yield maximization of oriental pickling melon (Cucumis melo var.conomon (L) Makino) by high density planting and nutrient management
(Department of Agronomy, College of Horticulture, Vellanikkara, 2013) Rajees, P C; Joseph, P A