Effect of Detopping Practice on Growth Parameters and Yield of Rabi Maize (Zea mays L.)

Untitled

“…Consequently, a higher yield of maize was attained as evidenced of superior yield attributing characters (Tables 1, 2, and 3), which include cob length (16.67 cm), cob girth (16.87 cm), number of rows per cob (15.41), number of seeds per row (27.92), number of seeds per cob (406) and 100 seed weight (36.15 g). These outcomes are similar with the research findings of Bhargavi et al (2017) [3] and Emam et al (2013b) [5] . However, when detopping was done with the top five leaves at 15 days after silking recorded significant lowest grain production (6237 kg ha -1 ), stover yield (6826 kg ha -1 ), and harvest index (42.47%) were observed (Table 4) and it was followed by the detopping at 20 days after silking, The loss of more green leaves during the early reproductive phase, which, the plant was more susceptible to source constraint and stress had an adverse effect on the amount of photosynthetically active leaf area and dry matter produced are may be the cause of the yield reduction.…”

“…Delay in detopping was associated with increased trend in grain yield (Afrarinesh, 2005) [1] and also due to detopping at two weeks after anthesis did not have any adverse effect on grain yield (Tahmasbi et al, 2001) [14] . These results are in conformity with findings of Bhargavi et al (2017) [3] , Emam et al (2013a) [4] , Woldeamlak et al (2006) [18] , Mimbar and Susylowati (1995) [12] . The cumulative expression of yield-attributing characters (Tables 1, 2, and 3) contributed to the rise in grain yield.…”

Effect of Various Stages and Levels of Detopping on Growth, Fodder Yield and Quality of Detopped Rabi maize (Zea mays L.)

“…Though LAI reduced with number of leaves removal, but dry matter production was not affected significantly with detopping up to two leaves, this may be due to proper absorption of sun light from the top leaves. These results are in conformity with findings of Manju Bhargavi et al [4] and Bhargavi et al [1]. Whereas, higher number of green leaves (10.33) and leaf area index (4.55) were recorded significantly higher when detopping was done at 15 days after silking with top two leaves and was followed by detopping at 15 days after silking with three leaves (9.93 and 4.40 number of green leaves and leaf area index, respectively).…”

Influence of Detopping on Fodder, Grain Yield and Economics of Rainfed Maize (Zea mays L.)

“…The findings of Manju Bhargavi et al [17] who reported that without reduction in yield and production of green fodder, the stage of detopping at 20 days after silking up to 4 leaves was found to be economical is in support of the present finding.…”