Record Details

Effect of spacing and weed management in cotton (Gossypium hirtusum L.) its residual effecton succeeding summer green gram under South Gujarat conditions

KrishiKosh

View Archive Info
 
 
Field Value
 
Title Effect of spacing and weed management in cotton (Gossypium hirtusum L.) its residual effecton succeeding summer green gram under South Gujarat conditions
 
Creator Patel, Himatbhai F
 
Contributor Raj, V.C.
 
Subject Unable to Generate Tags nau-57785 h . f . p a t e l.pdf
 
Description F ield e x p e r i m e n t s w e r e c o n d u c t e d o n a v e r t i s o l o f I n s t r u c t i o n a l F a r m , N a v s a r i A g r i c u l t u r a l U n i v e r s i t y , N a v s a r i ( G u j a r a t ) d u r i n g k h a r i f a n d s u mm e r s e a s o n s o f t h e y e a r 2 0 1 0 - 1 1 a n d 2 0 1 1 - 1 2 t o s t u d y t h e E f f e c t o f I n t r a r o w s p a c i n g a n d w e e d m a n a h m e n t i n c o t t o n ( G o s s y p i u m h i r t u s u m L . ) a n d i t s r e s i d u a l e f f e c t o n s u c c e e d i n g s u mm e r g r e e n g r a m u n d e r S o u t h G u j a r a t c o n d i t i o n s .
T h e s t u d y i n v o l v e d t w e n t y - o n e t r e a t me n t c o mb i n a t i o n s
c o n s i s t i n g o f t h r e e s p a c i n g . S 1 1 2 0 x 3 0 c m, S 2 1 2 0 x 4 5 c m a n d S 3 1 2 0 c m x 3 0 c m a n d s e v e n w e e d m a n a g e me n t p r a c t i c e s i . e . W1 Un weeded control, W2 Glyphosat @ 1.0kh/ha protected spraying at 30 and 60 DAS, W3 p e n d i me t h a l i n @ 1 . 0 k g / h a p r e e m e r g e n c e + h a n d w e e d i n g i n a t 3 0 a n d 6 0 D A S , W 4 We e d f r e e , W 5 p e n d i me t h a l i n @ 1 . 0 k g / h a + q u i z a l o t o p - P - e t h y l @ 0 . 0 5 k g / h a a t 3 0 D A S , W 6 P y r i t h i o b a c v s o d i u m @ 0 . 0 5 + h a n d w e e d i n g a t 3 0 D A S a n d W
7 P y r i t h i o b a c s o d i u m @ 0 . 0 5 + q u i z a l o f o p - P - e t h y l @ 0 . 0 5 k g / h a a t 3 0 D A S w e r e e v a l u a t e d i n s p l i t p l o t d e s i g n w i t h t h r e e r e p l i c a t i o n s . A f t e r h a r v e s t o f c o t t o n , t h e g r e e n g r a m w a s s o w n i n s u mm e r o n s a m e l a y - o u t f o r r e s i d u a l s t u d i e s . T h e s o i l o f t h e e x p e r i m e n t a l f i e l d w a s c l a y e y i n t e x t u r e , l o w i n a v a i l a b l e n i t r o g e n ( 142.36, 165.20 kg ha -1 , i n f i r s t a n d s e c o n d y e a r , r e s p e c t i v e l y ) , m e d i u m i n a v a i l a b l e p h o s p h o r u s ( 32.63, 31. 00 kg ha -1 , i n f i r s t a n d s e c o n d y e a r , r e s p e c t i v e l y ) a n d f a i r l y r i c h
i n a v a i l a b l e p o t a s h ( 410.00, 349.00 kg ha -1 , i n f i r s t a n d s e c o n d y e a r , r e s p e c t i v e l y ) w i t h s l i g h t l y a l k a l i n e r e a c t i o n .
V ar i ous g r o w t h a n d y i e l d a t t r i b u t i n g c h a r a c t e r s o f c o t t o n w e r e s i g n i f i c a n t l y a f f e c t e d d u e t o d i f f e r e n t l e v e l s o f s p a c i n g a n d w e e d ma n a g e m e n t p r a c t i c e s . W i d e r s p a c i n g o f 1 2 0 x 6 0 c m ( S 3 ) g a v e h i g h e r v a l u e s o f a l l g r o w t h a n d y i e l d p a r a me t e r s f o l l o w e d b y S
2 . T h e s p a c i n g l e v e l a t 1 2 0 x 6 0 c m ( S 3 ) a n d 1 2 0 x 4 5 c m ( S 2 ) i n c r e a s e d t h e s e e d c o t t o n y i e l d a n d s t a l k y i e l d . L i k e w i s e w e e d f r e e ( W 4 ) t e n d e d t o g i v e h i g h e s t s e e d c o t t o n y i e l d a n d s t a l k y i e l d , c o mp a r a b l e y i e l d s w e r e o b t a i n e d w i t h a p p l i c a t i o n o f p e n d i me t h a l i n @ 1 . 0 k g / h a p r e e m e r g e n c e + h a n d w e e d i n g i n a t 3 0 a n d 6 0 D A S S i m i l a r t r e n d w a s a l s o f o u n d i n g r o w t h a n d y i e l d a t t r i b u t e s o f c o t t o n ma i n l y d u e t o e f f e c t i v e c o n t r o l o f w e e d p o p u l a t i o n a n d w e e d b i o ma s s .
W e e d p o p u l a t i o n a t 2 0 , 4 0 , 6 0 , 9 0 D A S a n d a t h a r v e s t a n d
d r y w e i g h t o f t o t a l w e e d s a t h a r v e s t w e r e s i g n i f i c a n t l y l o w e s t w i t h
w i d e r s p a c i n g ( S 3 ) a n d ma r k e d l y h i g h e r u n d e r w e e d y c h e c k ( W 1 ) . D r y w e i g h t o f w e e d s a t h a r v e s t i s c o n c e r n e d a l l t h e t r e a t me n t s o f we e d m a n a g e m e n t d i f f e r e d s i g n i f i c a n t l y f r o m e a c h o t h e r a n d vi r e m a i n e d i n W 4 < W3 < W5 < W 6 < W2 < W 7 < W1 o r d e r o f t h e i r s i g n i f i c a n c e .
T h e c h e m i c a l a n a l y s i s o f s w e e t c o r n i n d i c a t e d t h a t u p t a k e o f N a n d K2 O w e r e f o u n d s i g n i f i c a n t l y h i g h e r w i t h w i d e r
s p a c i n g 1 2 0 x 6 0 c m ( S 3 ) , c l o s e l y f o l l o w e d b y 1 2 0 x 4 5 c m ( S 2 ) , w h i l e u p t a k e o f P 2 O 5 w a s n o t a f f e c t e d b y v a r y i n g l e v e l s o f s p a c i n g . T h e h i g h e s t u p t a k e o f n u t r i e n t s ( N , P 2 O 5 a n d K 2 O ) b y c o t t o n w a s o b s e r v e d u n d e r w e e d f r e e ( W 4 ) , w h i l e u n w e e d e d p l o t s r e c o r d e d t h e l o w e s t v a l u e . T h e r e m o v a l o f n u t r i e n t s t h r o u g h w e e d s w a s l o w e s t i n w e e d f r e e t r e a t m e n t s .
T h e h i g h e s t n e t r e a l i z a t i o n o f R s . 8 6 4 1 8 h a - 1 w i t h B C R
o f 5 . 9 1 w a s o b t a i n e d w i t h w i d e r s p a c i n g 1 2 0 x 6 0 c m ( S 3 ) w h i c h w a s c l o s e l y f o l l o w e d b y t r e a t m e n t s S 2 ( 1 2 0 x 4 5 c m ) w i t h n e t r e a l i z a t i o n o f R s . 8 1 6 0 2 h a - 1 a n d B C R 5 . 3 1 . s i m i l a r l y t h e h i g h e s t n e t r e a l i z a t i o n o f R s . 9 8 8 7 6 h a - 1 w a s o b t a i n e d f r o m t r e a t m e n t o f p e n d i me t h a l i n @ 1 . 0 k g / h a p r e e m e r g e n c e + h a n d w e e d i n g i n a t 3 0 a n d 6 0 D A S ( W3
) w i t h B C R v a l u e o f 6 . 8 1 f o l l o w e d b y t r e a t m e n t s w e e d f r e e ( W 4 ) w i t h n e t r e a l i z a t i o n R s . 9 3 0 6 3 h a - 1 a n d B C R v a l u e s o f 6 . 6 0 .
V a r y i n g l e v e l s o f s p a c i n g a s w e l l a s w e e d m a n a g e m e n t p r a c t i c e s a p p l i e d t o p r e c e d i n g c o t t o n c r o p d i d n o t l e a v e a n y r e s i d u e i n t h e s o i l t o a f f e c t t h e g r o w t h a n d y i e l d p a r a me t e r s o f t h e s u c c e e d i n g g r e e n g r a m c r o p a d v e r s e l y o r f a v o u r a b l y .
B a s e d o n t w o y e a r s f i e l d i n v e s t i g a t i o n s ‟ r e s u l t s , i t c a n b e c o n c l u d e d t h a t t h e h i g h e r p r o f i t a b l e s e e d c o t t o n y i e l d o f k h a r i f c o t t o n C v . B t c o t t o n ( V i k r a m - 5 ) c a n b e o b t a i n e d b y s o w i n g t h e
c r o p e i t h e r a t 1 2 0 x 6 0 c m o r 1 2 0 c m x 4 5 c m a n d t o a p p l y
p e n d i me t h a l i n @ 1 . 0 k g / h a p r e e m e r g e n c e + h a n d w e e d i n g i n a t 3 0
a n d 6 0 D A S a n d p o s t e m e r g e n c e a p p l i c a t i o n o f q u i z a l o f o p p
e t h a y l c o u p l e d w i t h h a n d w e e d i n g a t 3 0 a n d 6 0 D A S o r k e e p i n g t h e c r o p w e e d f r e e t h r o u g h o u t t h e c r o p l i f e b y a d o p t i n g t h r e e h a n d w e e d i n g w i t h o u t a n y a d v e r s e e f f e c t t o s u c c e e d i n g s u mm e r g r e e n g r a m c r o p u n d e r S o u t h G u j a r a t c o n d i t i o n s .
 
Date 2016-05-26T11:43:22Z
2016-05-26T11:43:22Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66336
 
Language en
 
Format application/pdf
 
Publisher NAU