Browsing by Author "Chandini, S"

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Crude protein and crude fibre content of fodder grasses as influenced by legume intercropping and phosphorus application
(Kerala Agricultural University, 1982) Chandini, S; Raghavan Pillai, G; Sreedharan, C
Effect of microbial inoculants on Stylosanthes guianensis cv. Schofield for herbage production
(Department of Agronomy, College of Agriculture, Vellayani, 1993) Sreedurga, N; Chandini, S
Fodder production potential of grass legume mixtures as influenced by phosphorus levels
(Kerala Agricultural University, 1985) Chandini, S; Raghavan Pillai, G; Sreedharan, C
Nutrient management for yield improvement of transplanted rice in the southern region of Kerala
(Department of Agronomy, College of Agriculture, Vellayani, 1999) Sudha, B; Chandini, S
An experiment entitled "Nutrient management for yield improvement of transplanted rice (Oryza sativa L.) in the southern region of Kerala" was conducted at Cropping Systems Research Centre (CSRC) Karamana, during the kharif season of 1998 to study the efficacy of organic manures in conjunction with varying levels of NPK nutrients and sulphur in enhancing rice yield using the variety Kanchana. The experiment was laid out in 33 partially confounded factorial RBD with two replications. Combinations of three levels each of organic manures (M), inorganic NPK fertilizers (F) and sulphur (S) constituted the treatments. FYM @ 5 and lOt ha-l as well as vermicompost @ 5 t ha-l included the different manure levels. The normal NPK rates of 70 : 35 : 35 kg ha-l and enhanced rates of 87.5 : 43.75 : 43.75 and 105 : 52.5 : 52.5 kg ha-l were the three fertilizer levels. The different S levels were no sulphur, S @ 12.5 and 25 kg ha-1 Higher order interactions of MFS and M2FS were confounded in Rep I and Rep 11 respectively. Results of the field experiment revealed that the main effects of organic manures, chemical fertilizers and sulphur as well as their combinations exerted significant positive influence on most of the growth and yield attributing characters of rice. The higher NPK levels upto 105 : 52.5 : 52.5 kg ha-l and S levels of 25 kg ha-l were found significantly superior to lower levels. Organic manuring with FYM @ 10 t ha-1 and vermicompost @ 5 t ha-1 were found to be equally good in influencing growth and yield of rice. The available NPK status of soil after the experiment was maintained well above the initial status. The available sulphur status of soil was found to be considerably reduced in treatments which didn't receive sulphur addition. FYM levels recorded better benefit : cost ratio over verrnicompost addition. Increase in NPK levels upto 105 : 52.5 52.5 kg ha-l and sulphur addition @ 12.5 kg ha-l was found profitable. The combination of 5 t ha-l FYM along with the highest NPK level of 105 : 52.5 : 52.5 kg ha-I and S @ 25 kg ha-I recorded the highest B : C ratio, but this was comparable to that obtained with the combined effect of 5 t ha-l FYM, NPK @ 87.5 : 43.75 : 43.75 and S @ 12.5 kg ha-I.
Nutrient management in rice (Oryza sativa L.)
(Kerala Agricultural University, Vellanikara, 2002) Sudha, B; Chandini, S
Nutrient management in rice (Oryza sativa L.)
(Kerala Agricultural University, Vellanikara, 2002) Sudha, B; Chandini, S
Nutritional requirement of bush pepper under different light intensities
(Department of Agronomy, College of Agriculture, Vellayani, 1997) Madhura Devadas; Chandini, S
A pot culture experiment was conducted at the Farming Systems Research Station, Kottarakkara to study the influence of NPK fertilizers under different light intensities on the growth yield and quality of bush pepper. The treatments included three levels of light (100, 75 and 50 per cent) three levels of each of N, P (25, 37.5 and 50 g bush-1) and K (50, 75, 100 g bush-1). The experiment was laid out in split plot design with three replications. Light intensities showed profound influence on the length and number of primary and secondary branches, number of leaves, leaf area, chlorophyll content of leaves, internodal length and drymatter production. Best expression of all these characters was under 50 per cent light. All these characters showed a-declining trend as light intensity increased from 50 per cent to 100 per cent light. In the open condition better expression of all growth characters were observed from low to medium level of nitrogen and phosphorus (25 to 37.5 g bush-1). Under 75 per cent light better expression of all growth characters was at medium level of N(37.5 g bush-1), K (75 g bush-1) and lowest level of P (25 g bush-1). Under 50 per cent light response to N levels was not consistent for different growth parameters. The plant showed positive response to P and K from medium to highest level (37.5 to 50 g bush-1). Earlier flowering was observed at 50 per cent light. Under all levels of light higher levels of N delayed flowering, but incremental doses of P induced early flowering. Dry matter production at all light intensities was more in low to medium levels of nutrients. Yield and yield attributes were not influenced by light intensities. However maximum berry yield was recorded under 50 per cent light with 37.5 g N and 37.5 g P bush-1. Under 100 and 75 per cent light also maximum yield was recorded by plants receiving 37.5 g each of N and P bush-1. Quality of the produce was not significantly influenced by the varying light levels. N levels had significant effect on the volatile oil content and P levels on oleoresin content. Maximum uptake .of all the nutrients was observed under 450 per cent light. There was a steady increase in the uptake of all the nutrients with increasing dose of the three nutrients. Under 100 per cent and 75 per cent light maximum uptake was from medium to high level of the nutrients.
Sulpher and boron nutrition of groundnut (arachis hypogaea L)var TG-3
(Department of Agronomy, College of Agriculture, Vellayani, 1992) Chandini, A; Chandini, S
An investigation was undertaken at the college of Agriculture, Vellayani during the period from April to November 1990, to study the effect of different levels and time of application of sulphur (15 kg, 20 kg and 25 kg S.ha-1) and boron (4 kg and 6 kg B.ha-1) for groundnut cv. TG-3 in the red sandy clay loam of Kerala The investigation compared of an initial pot culture study followed by a field experiment. The pot culture study was laid out in completely randamised design and the field experiment in randomised block design with three replications. The highest dose of sulphur, viz. 25 kg S.ha-1 recorded significant influences on growth characters like plant height, number of leaves and leaf area index of the crop. The effect of boron was significant at 90 DAS for number of branches, at 90 DAS and at harvest for number of leaves, and at 60 DAS and 90 DAS for leaf area index. Significant response was noted only upto 4 kg B. ha-1 for growth characters. The effect of sulphur and boron application on nodule number was significant. But the three levels of sulphur and two levels of boron were on par with each other. Sulphur had a favourable influence on all the yield attributing characters viz. number of pods plant-1 , weight of pods plant-1, weight of kernels plant-1weight of pods plant-1, weight of kernels plant-1, 100 kernel weight and shelling percentage and consequently on pod yield, total drymatter production and harvest index. Sulphur at 20 kg and 25 kg S. ha-1 were found to be on par in their effects. Boron at 4 kg and 6 kg B. ha-1 were on par in influencing the pod number plant-1, pod weight plant-1, pod yield and bhusa yield of groundnut. There was a significant interaction between 25 kg S. ha-1 and 6 kg B. ha-1 for pod number plant-1. The oil content of groundnut kernels increased with progressive levels of sulpur and boron application. Sulphur at 20 kg and 25 kg and boron at 4 kg and 6 kg were on par in their effects. The protein content of groundnut kernels also increased with progressive levels of sulphur, with the levels 20 kg S. and 25 kg S. ha-1 on par with each other. But the protein content increased upto 4 kg B.ha-1 only. Sulphur and boron application enhanced the boron content of kernels significantly while application of sulphur alone increased the sulphur content of kernels. Maximum N, P and S uptake were noted when sulphur was applied @ 25 kg ha-1 . Maximum N uptake by the crop was noted when boron was applied @ 4 kg B. ha-1. B uptake was also significant only upto 4 kg B. ha-1. The time of application did not have any significant influence on growth characters, yield attributes, or yield of the crop.
Vettilakrishi
(Kerala Agricultural University, 1995-07) Chandini, S
Yield and quality of betel vine (Piper betel L.) as influenced by planting material and integrated nutrient management
(Department of Agronomy, College of Agriculture, Vellayani, 2004) Usha Thomas, C; Chandini, S