PERFORMANCE OF MAIZE-CHICKPEA SEQUENCE AT DIFFERENT SOWING WINDOWS AND NUTRIENT MANAGEMENT PRACTICES
Loading...
Files
Date
2016
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Acharya N.G. Ranga Agricultural University, Guntur
Abstract
A field experiment entitled “Performance of maize-chickpea sequence at
different sowing windows and nutrient management practices” was conducted for
two consecutive years (2013-14 and 2014-15) on a clay soil of Regional
Agricultural Research Station, Lam Farm, Guntur-34 with an objective to find
out the feasibility of maize-chickpea based cropping system for rainfed areas of
Krishna agro-climatic conditions of Andhra Pradesh and to find out suitable
agronomic management techniques for maize-chickpea based cropping system
for rainfed areas and its economics. The kharif experiment was conducted in split
plot design and the treatments were replicated thrice with three sowing windows viz., 2nd Fortnight of June, (M1) 1st Fortnight of July (M2) and 2nd Fortnight of
July (M3) as main plot treatments and three levels of nitrogen (N1:100 % RDN;
N2:150 % RDN; N3:200 % RDN) as sub plot treatments with maize in kharif
season. In the same field rabi experiment was conducted in split-split plot
design and the treatments were replicated thrice with three sowing windows
where maize crop harvested as main plots and N levels to maize
(N1:100 % RDN; N2:150 % RDN; N3:200 % RDN) as sub-plots and N levels to
chickpea (F1: 0 % RDN, F2: 50 % RDN, F3: 75 % RDN and F4: 100 % RDN) as
sub-sub plots in rabi. The trial was repeated on the same field with same type of
soil in the second year. During the two years of experimentation in kharif
popular high yielding maize hybrid Pioneer 3396 followed by the most popular
high yielding chickpea variety suitable for this region JG-11 were sown in rabi. The growth parameters of maize viz., plant height and drymatter
accumulation was influenced by sowing windows and N levels applied to maize. 2nd FN of June sowing of maize resulted in the maximum plant height and
drymatter accumulation at maturity during both the years. Irrespective of the year
of study, plant height and drymatter accumulation were significally higher with
200 % N and was comparable with that of 150 %. Similarly, yield attributes like
cob length was significantly more with 200 % RDN and comparable with that of 150 % RDN in 2013-14 while number of kernel rows cob-1 was more with
200 % RDN and was comparable with that of 150 % RDN in both the years. Cob
diameter was more with 200 % RDN but not comparable with 150 % RDN in both the years. The cob weight and number of kernels cob-1 were significantly
higher with 200 % RDN over 100 % RDN but comparable with 150 % RDN in 2013-14. Number of chaffy kernels cob-1 and 100-kernel weight of maize were more with crop sown 2nd FN June with nitrogen at 200 % in both the years.
Similarly, more kernel and stover yields, economic return and nutrient uptake of maize were recorded in the crop sown on 2nd FN June with at 200 % RDN
followed by 150 % RDN. The significally higher kernel yield of 94.94 and 94.29 q ha-1 was recorded with crop sown on 2nd FN June with 200 % RDN as
preceding crop during first and second years, respectively. However, it was comparable with that of crop sown on 1st FN July sowing with 150 % RDN as preceding crop 91.35 and 93.05 q ha-1, respectively. The highest kernel yield of 93.96 and 93.31q ha-1 was observed with 200 % in both the years which was
significantly superior to 100 % RDN tested. The total uptake of N by maize at
harvest was the highest with 200 % RDN, which was on a par with 150 % RDN
in both the years.
The growth parameters of succeeding rabi chickpea viz., plant height and
drymatter accumulation was influenced by preceding maize treatments and N levels applied to chickpea. 1st FN of July sowing with 200 % RDN to preceding
maize and N applied at 100 % RDN to succeeding chickpea resulted in the
maximum plant height and drymatter accumulation at maturity during both the
years. Irrespective of the year of study, plant height and drymatter accumulation
were the maximum with 100% RDN and was comparable with that of 0, 50, 75 % RDN. Similarly, yield attributes like number of branches plant-1, number of pods plant-1, number of seeds pod-1 and test weight (1000 grain weight) were significantly more when preceding maize was sown on 1st FN of
July with 200 % RDN and N applied at 100 % RDN to succeeding chickpea in
both the years. Similarly, more grain and stover yields, economic return and
nutrient uptake of succeeding chickpea were recorded when the preceding maize
was sown on 1st FN of July with 200% RDN and N applied at 100 % RDN to succeeding chickpea. The highest grain yield of 17.47 and 17.42 q ha-1 was recorded with succeeding chickpea when preceding maize sown on 1st FN July
with 200 % RDN during first and second years, respectively, however, it was comparable with that of crop sown on 2st FN July and 2nd FN June sowing with
100 and 150 % RDN as preceding crop. The highest grain yield of (17.49 and 17.35q ha-1) was observed with 100 % RDN applied to succeeding
chickpea in both the years which was significantly superior to 0, 50, 75 % RDN
tested. The total uptake of N by chickpea at harvest was the highest with
100 % RDN applied to succeeding crop.
From the experiments conducted for two consecutive years, with kharif
maize followed by succeeding chickpea in sequence at different sowing windows
and nitrogen levels, it clearly indicated that maize-chickpea sequence is profitable when maize was sown on 1st FN July with 200 % followed by chickpea
sown at 100 % RDN with the BC ratio of Rs. 3.6 to 3.9 under Krishna agro
climatic conditions of Andhra Pradesh.
Description
D5234
Keywords
null