TY  - BOOK
AU  - Mini CL 
AU  - Kuruvilla Varughese(Guide)
TI  - Response Of Vegetable CowPea To Phosphorus Under Varying Moisture Levels And Plant Density
U1  - 630 
PY  - 1997///
CY  - Vellayani
PB  - Department of Agronomy, College of Agriculture 
N2  - An experiment was conducted at the Instructional 
Farm attached to the College of Agriculture, Vellayani in the 
summer rice fallows during 1994-‘95 to study the response of 
vegetable cowpea cv. Malika to phosphorus under varying 
moisture levels and plant density. The experiment was laid out 
in strip-split plot design with 3 replications. The treatments 
included three levels each of irrigation and plant density and 
four levels of phosphorus. 
The study revealed that the crop responded to 
irrigation, plant density as well as phosphorus levels. The 
biometric characters like plant height, number of leaves and 
branches per plant, earliness in flowering, total DMP and yield 
attributing characters like number of pods per plant were 
favourably influenced by giving daily light irrigation of l0mm 
(farmer1s practice) throughout the crop period. The maximum 
values for the above said characters were also observed at a 
plant density level of 16,667 pts/ha (1.0x0.6m) and a phosphorus 
level of 45kg/ha compared to the other levels. 
The maximum yield of green pods and haulm was obtained 
by daily light irrigation with 10mm water and a plant density 
of 16,667 pts/ha. The crop responded upto 45 kg/ha P2O5 
application. The uptake of major nutrients N,P and K by the 
crop also followed the same trend. 
But the water-use efficiency was highest for the least 
freqently irrigated treatment viz. irrigating at 15mm CPE and was 
 
 
 
	
found to decrease with increase in the frequency of irrigation. A 
plant density level of 16,667 pts/ha and a phosphorus level of 
45kg/ha also recorded maximum water-use efficiency. Soil moisture 
extraction pattern showed that less frequent the irrigation, 
more the percentage of absorbtion from deeper soil layers. A plant 
density level of 16,667pts/ha as well as a phosphorus level of 
45kg/ha also gave maximum absorbtion from top soil layers where as a 
higher plant density gave maximum absorbtion from the deeper soil 
layers. 
The available N, P and K contents of the soil after the 
experiment indicated a decrease in the soil nutrient status with an 
increase in the moisture level of the soil. The highest nutrient 
status was also noted with a density level of 16,667 pts/ha and a 
phosphorus level of 45kg/ha. 
The results of economic analysis revealed that the net 
income and benefit-cost ratio was maximum by irrigating the crop at 
10mm CPE, at a plant density of 16,667 pts/ha and a phosphorus level 
of 45kg/ha. 


UR  - https://krishikosh.egranth.ac.in/handle/1/5810131133
UR  - https://krishikosh.egranth.ac.in/displaybitstream?handle=1/5810131133&fileid=8e678e60-9013-49fd-b26a-96724f896375
ER  -