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Agronomy
A G R O N O M Y
ABRAMS, R. 1975.
Status of research on pigeonpeas in Puerto
R i c o . F i r s t I n t e r n a t i o n a l Workshop o n
G r a i n Legumes, 13-16 J a n , 1975. ICRISAT,
Hyderabad, I n d i a . 141-148. 1
Discusses importance o f t h e c r o p ; i t s
c u l t i v a t i o n , weed c o n t r o l , l i m e and f e r t i ­
l i z e r s , date o f p l a n t i n g , row w i d t h , p l a n t
p o p u l a t i o n s , c u l t u r a l p r a c t i c e s . Breeding
programs, i n h e r i t a n c e , v a r i e t y - e n v i r o n m e n t
i n t e r a c t i o n s , diseases and i n s e c t s , p r o c e s ­
s i n g , and o t h e r q u a l i t y aspects are a l s o
d i s c u s s e d .
ABRAMS, R., and F . J . JULIA. 1973.
E f f e c t o f p l a n t i n g t i m e , p l a n t p o p u l a t i o n ,
and row spacing on y i e l d and o t h e r c h a r a c ­
t e r i s t i c s of pigeonpeas, Cajanus aajan ( L . )
M i l l s p . J . A g r i c . U n i v . P . Rico
5 7 ( 4 ) : 2 7 5 - 2 8 5 . 2
The e f f e c t o f p l a n t i n g d a t e , p o p u l a t i o n ,
and row spacing was s t u d i e d w i t h s p e c i a l
r e f e r e n c e to mechanized pigeonpea p roduct
i o n . Date of p l a n t i n g , row s p a c i n g , and
p l a n t p o p u l a t i o n had no e f f e c t on seed s i z e
or number of seeds per pod, b u t pods per
p l a n t i n c r e a s e d markedly w i t h i n c r e a s e d
spacing and w i t h e a r l y p l a n t i n g s . Y i e l d
tended to be h i g h e r at lower spacing
between rows and at h i g h e s t p o p u l a t i o n s ,
r e g a r d l e s s of row s p a c i n g .
ABRAMS, R., and F . J . JULIA. 1974.
E f f e c t o f m e c h a n i c a l , c u l t u r a l , and chemic
a l weed c o n t r o l on y i e l d and y i e l d components
of pigeonpeas, Cajanus aajan ( L . )
M i l l s p . A g r i c . U n i v . P . Rico
5 8 ( 4 ) : 4 6 6 - 4 7 2 . 3
Prometryne ( p r e e m e r g e n t ) , paraquat ( p o s t -
emergent) , m e c h a n i c a l , and handweeding
t r e a t m e n t s increased green-pod y i e l d and
pod number per p l a n t , in f o u r d e t e r m i n a t e
and f o u r i n d e t e r m i n a t e l i n e s , w i t h the
chemicals g i v i n g t h e g r e a t e s t i n c r e a s e .
The t r e a t m e n t s had no e f f e c t , however, on
p l a n t h e i g h t , number of days to f l o w e r ,
seed w e i g h t , or seed number per pod.
AHLAWAT, I . P . S . , C.S. SARAF, and A. SINGH.
1975.
S t u d i e s on t h e performances of pigeonpea
v a r i e t i e s t o dates o f p l a n t i n g and row
s p a c i n g . I n d i a n J . A g r o n . 2 0 ( 3 ) :
245-247.
4
Three Cajanus v a r i e t i e s t e s t e d d u r i n g 1972
gave s i m i l a r seed y i e l d s , b u t in 1973 cv
T-21 gave a h i g h e r y i e l d than Pusa A g e t i
and Sharda. In 1973, d i f f e r e n c e s were
observed between the v a r i e t i e s i n the f i v e
y i e l d c h a r a c t e r s s t u d i e d . E a r l y p l a n t i n g
and 50-cm row spacing were b e t t e r than
l a t e p l a n t i n g and 75-cm row s p a c i n g .
AIYER, A . K . Y . N . 1949.
Mixed c r o p p i n g i n I n d i a . I n d i a n J . A g r i c .
S c i . 19:439-443. 5
D e t a i l s o f the v a r i o u s crops w i t h which
pigeonpea is grown in m i x t u r e and of the
p r o p o r t i o n s i n which i t i s sown. The
l i s t s are f o r m i d a b l e — f o r example, i n the
case of Cajanus indiaus, the r e p o r t i n g
s t a t e s and provinces g i v e a t o t a l of 65
types of m i x t u r e s .
AIYER, A . K . Y . N . 1949.
Mixed c r o p p i n g i n I n d i a . P a r t I I . Mixed
c r o p p i n g w i t h r e f e r e n c e to some p r i n c i p a l
c r o p s : Redgram. I n d i a n J . A g r i c . S c i .
1 9 ( 4 ) : 5 2 4 - 5 2 7 . 6
Red gram is grown in m i x t u r e w i t h one o t h e r
c r o p , or w i t h two or more o t h e r s , up to s i x .
The t o t a l number of m i x t u r e s is 65; of these
17 c o n t a i n more than two c r o p s . Pulses
e n t e r i n t o 3 6 m i x t u r e s . The p r o p o r t i o n s i n
which seeds of the d i f f e r e n t components are
mixed also vary w i d e l y . The d i f f e r e n t p r o ­
p o r t i o n s f o r r e d gram are l i s t e d .
AKINOLA, J . O . , and P.C. WHITEMAN. 1975.
Agronomic s t u d i e s on pigeonpea (Cajanus
aajan ( L . ) M i l l s p . ) . 1 . F i e l d responses
t o sowing t i m e . A u s t . J . A g r i c . Res.
26(1) : 4 3 - 5 6 . 7
V e g e t a t i v e and r e p r o d u c t i v e responses of
two e a r l y m a t u r i n g and two l a t e - m a t u r i n g
C. aajan accessions to e i g h t sowing dates
were i n v e s t i g a t e d . P r e f l o w e r i n g t o podr
i p e n i n g d u r a t i o n s v a r i e d , depending upon
i n t e r a c t i o n s between c l i m a t i c f a c t o r s and
the p h o t o p e r i o d i c responses of t h e access
i o n s . Q u a n t i t a t i v e s h o r t - d a y , d a y - n e u t r a l ,
o r n e a r l y d a y - n e u t r a l , and i n t e r m e d i a t e
p h o t o p e r i o d i c forms were i d e n t i f i e d . R e l a ­
t i o n s h i p between day l e n g t h , r a d i a t i o n ,
growing d e g r e e - d a y s , and seed y i e l d / h a
based on i n d i v i d u a l monthly h a r v e s t s and
h a r v e s t index were e s t a b l i s h e d f o r a sowing
d e n s i t y of 2,990 p l a n t s / h a . Optimum sowing
dates were l a t e November to mid-January f o r
dry seed p r o d u c t i o n i n t h e l a t e - m a t u r i n g
a c c e s s i o n s , and n o t l a t e r than December f o r
p e r i o d i c green-pod p i c k i n g i n the e a r l y
m a t u r i n g a c c e s s i o n s .