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Response of rabi sweet corn (Zea mays L. var. saccharata Sturt) to spacing and fertilizer levels under South Gujarat condition

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Title Response of rabi sweet corn (Zea mays L. var. saccharata Sturt) to spacing and fertilizer levels under South Gujarat condition
 
Creator Dangariya, Mohit V.
 
Contributor DUDHAT, M. S.
 
Subject crossing over, sowing, yields, biological phenomena, developmental stages, planting, heterosis, environment, genetics, genotypes
 
Description A field experiment entitled “Response of rabi sweet corn (Zea mays L. var. saccharata Sturt) to spacing and fertilizer levels under south Gujarat condition” was conducted during rabi 2011 at College Farm, Department of Agronomy, College of Agriculture, Navsari Agricultural University, Navsari. The experiment comprising sixteen treatment combinations consisting four levels of plant spacing (60 x 15, 45 x 20 , 30 x 30 and 60 x 30 cm ) and four fertility levels (60-30, 90-45, 120-60 and 150-75 kg N- P2O5/ha). These treatments were replicated three times in a split plot design. The experimental soil was clayey and high in available N and high in available potash. Plant spacing of 60 x 30 cm , 45 x 20 cm and 60 x 15 cm attained significantly higher plant height compared to 30 x 30 cm. While stem diameter and number of leaves per plant were not influenced by different spacing levels. ABSTRACT

The sweet corn plants exhibited significantly maximum values of yield attributes viz., cob length, cob girth, dry weight of 100 grains under spacing of 45 x 20 cm. Numbers of barren plants were lowest at 45 x 20 cm plant spacing. Number of cobs per plant and cob yield per plant were higher under spacing of 60 x 30 cm. Highest green cob yield was recorded at spacing of 45 x 20 cm closely followed by 30 x 30 cm. Quality parameters viz., crude protein cob and fodder, reducing and non-reducing sugar content of grains were higher at spacing 45 x 20 cm over 60 x 30 cm. Significantly higher content of N, P and K in cob and fodder as well as uptake of N, P and K by cob and fodder were observed under spacing 45 x 20 cm. However, available N, P and K status of soil after harvest of the crop remained unaffected by crop geometry. The highest net return (Rs.60568/ha) and BCR (5.52) were recorded under plant spacing of 45 x 20 cm. The results of the present investigation indicated that the growth of sweet corn in terms of plant height, number of leaves per plant, stem diameter were maximum with application of 150-75 kg N-P2O5/ha. The sweet corn plants exhibited maximum values of yield attributes viz., number of cobs per plant under 150-75 kg N-P2O5/ha and found at par with those recorded under 120-60 kg N-P2O5/ha. Whereas cob length, cob girth and dry weight of 100 grains were under kg 120-60 kg N-P2O5/ha and found at par with those recorded under 150-75 kg N-P2O5/ha.
Application of 150-75 and 120-60 kg N-P2O5/ha significantly increased green cob yield over 90-45 and 60-30 kg N-P2O5/ha. Quality parameters viz., protein content of cob and fodder and reducing and non- reducing sugar content of kernel were significantly enhanced, while

moisture content was decreased by application of 150-75 and 120-60 kg N-P2O5/ha over 90-45 and 60-30 kg N-P2O5/ha.
Significantly higher content of N and P in cob and fodder as well as uptake of N, P and K by cob and fodder were observed under 150-75 and 120-60 kg N-P2O5/ha levels over 90-45 and 60-30 kg N-P2O5/ha. Increasing levels of fertility also increased status of available N, P and K in soil after harvest of the crop.
Economic evaluation of fertility levels revealed that the highest net return of Rs. 59509/ha and BCR of 5.46 were recorded with application of 120-60 kg N-P2O5/ha. Thus, from the present study, it seems quite logical to conclude that higher production and net returns from rabi sweet corn ( var. Madhuri ) can be secured by sowing the crop at 45 cm x 20 cm spacing and fertilizing with 120-60 kg N-P2O5/ha on clayey soil under south Gujarat condition.
 
Date 2017-01-20T09:27:47Z
2017-01-20T09:27:47Z
2013-07
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/97227
 
Language en
 
Format application/pdf
 
Publisher Agronomy Dept., N.M.College of Agriculture, Navsari Agricultural University, Navsari