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Agronomy
RAMANUJAM, S. 1972.
Some s a l i e n t r e s u l t s o f p u l s e r e s e a r c h ( 2 ) .
I n d i a n Fmg 2 1 ( 1 1 ) : 1 9 - 2 1 , 2 4 . 164
Summarizes i m p o r t a n t f i n d i n g s of a comprehensive
and c o n c e n t r a t e d research program
o n t h e agronomy o f p u l s e crops i n I n d i a .
Deals w i t h f e r t i l i z i n g , p l a n t d e n s i t y ,
i n t e r c r o p p i n g , and time o f p l a n t i n g o f
v a r i o u s p u l s e c r o p s . One of the i m p o r t a n t
f i n d i n g s f o r pigeonpea i s i t s response t o
P f e r t i l i z i n g . The h i g h e s t y i e l d s o f
pigeonpea were o b t a i n e d w i t h 60,000 p l a n t s /
h a . Slow s e e d l i n g growth of p u l s e crops
makes chemical weeding e s s e n t i a l f o r h i g h
y i e l d s . D u r i n g the e a r l y growth p e r i o d ,
cowpea, mungbeans, or soybeans can be
i n t e r p l a n t e d i n pigeonpea w i t h o u t
a f f e c t i n g i t s y i e l d .
RAO, K.S. 1976.
Response of pigeonpea (Cajanus cajan)
v a r i e t i e s t o v a r i o u s l e v e l s o f phosphorus.
M.Sc. (1976)Thesis. J a w a h a r l a l Nehru K r i s h i
Vishwa V i d y a l a y a , J a b a l p u r , I n d i a . 165
RATHI, S . S . , D. SINGH, and R.C. MALIK.
1974.
Response of s h o r t d u r a t i o n a r h a r (Cajanus
aajan) to dates of sowing, row spacing and
phosphate a p p l i c a t i o n . F e r t i l . News
19(2) : 2 7 . 166
Date of s o w i n g , row s p a c i n g , and l e v e l s of
phosphate s i g n i f i c a n t l y a f f e c t e d a r h a r
y i e l d . Sowing of June 10 gave t h e h i g h e s t
y i e l d , and 50-cm row spacing y i e l d e d h i g h e r
than 75- and 100-cm s p a c i n g s . A s i g n i f i ­
cant i n t e r a c t i o n between dates of sowing
and r a t e s of phosphate placement was
o b s e r v e d , h i g h e s t g r a i n y i e l d b e i n g o b t a i ­
ned when the June 10 sowing was f e r t i l i z e d
w i t h 80 kg P 2 O 5 / h a . Phosphorus a p p l i c a t i o n
gave c o n s i s t e n t and s i g n i f i c a n t i n c r e a s e s
i n g r a i n y i e l d under a l l dates o f sowing.
RAVENZA, M . V . B . , and M.A. BARR0TA. 1953.
F i r s t experiments w i t h Cajanus indious.
Rev. Fac. A g r i c . U n i v . Cent. Venez.
L. 211-215. 167
REEM, H.W. 1968.
The p o t e n t i a l f o r legumes i n t r o p i c a l a g r i ­
c u l t u r e and t h e i r r o l e i n s o l v i n g t h e w o r l d
food s u p p l y . P r o c . S o i l Crop S c i . Soc.
F l a . 2 7 : 3 4 7 - 3 5 7 . 168
The p o s s i b i l i t i e s o f legume p r o d u c t i o n t o
improve w o r l d food supply a r e emphasized.
A t t e n t i o n i s p a i d t o soybeans, p u l s e s , and
groundnuts a s food crops i n B r a z i l , I n d i a ,
I r a n , A f r i c a and Far E a s t . The use of
legumes as a green manure i n c r e a s e s t h e
r i c e y i e l d s b y 25%, i f i n i t i a l l e v e l s o f
p r o d u c t i o n are l o w . The importance of
maximum y i e l d per u n i t o f l a n d per y e a r i s
s t r e s s e d . I t i s proposed t o i n t r o d u c e
s u i t a b l e r o t a t i o n schedules i n c l u d i n g
e d i b l e legumes.
RENARD, M. 1949.
Regeneration of the exhausted s o i l s of the
French Sudan. B u l l . A g r i c . Congo B e i g e .
40:2173-2188. 169
RICHHARIA, R.H. 1948.
Progress r e p o r t of the research scheme on
pulses in B i h a r f o r the year 1947-48. 170
RI0LLAN0, A . , A. PEREZ, and C. RAMOS.
1962.
E f f e c t o f p l a n t i n g d a t e , v a r i e t y , and p l a n t
p o p u l a t i o n on the f l o w e r i n g and y i e l d of
pigeonpeas {Cajanus aajan L . ) . J. A g r i c .
U n i v . P. Rico 46(2) :126-134. 171
Three pigeonpea v a r i e t i e s were sown on the
15th of each month from J u l y 1954 to June
1955. Depending on the date of s o w i n g ,
the number of days to f l o w e r i n g ranged from
125 to 320 days in the v a r i e t i e s F l o r i d o
and K a k i and from 174 to 430 days in the
l a t e v a r i e t y Saragateado. P l a n t h e i g h t
ranged from 0.9 to 4.5 m in t h e f i r s t two
v a r i e t i e s and from 1.5 to 4.4 m in Saragat
e a d o . A l l t h r e e v a r i e t i e s f l o w e r e d i n the
s h o r t - d a y season, i r r e s p e c t i v e o f sowing
d a t e . N o s i g n i f i c a n t d i f f e r e n c e s i n y i e l d
were observed between p l a n t i n g d i s t a n c e s
w i t h i n t h e row of 0 . 6 , 0 . 9 , and 1.2 m.
ROCHE, P. et al. 1955.
Use o f green manures i n r i c e - f i e l d s i n
Lake A l a o t r a r e g i o n (Madagascar). R i z .
R i z i c . 1 ( 4 ) : 1 4 1 - 1 4 4 . 172
Soybean and Cajanus indious are recommended
as green manures f o r i n c r e a s i n g r i c e
y i e l d s . These legumes are grown as c a t c h
crops under i r r i g a t i o n ; t h e i r p l a c e i n t h e
r o t a t i o n i s a f t e r r i c e . They are sown i n
June and plowed under in November, w h i l e
r i c e occupies t h e ground from December to
May.
R0CKW00D, W.G., and R. LAL. 1974.
Mulch t i l l a g e : A t e c h n i q u e f o r s o i l and
water c o n s e r v a t i o n i n the t r o p i c s . Span
1 7 ( 2 ) : 7 7 - 7 9 . 173
Systems o f m u l c h - t i l l a g e (Zero t i l l a g e )
c r o p p i n g o n t r o p i c a l s o i l s are d i s c u s s e d .
I n p l o t t r i a l s , y i e l d s o f cowpea, m a i z e ,
and pigeonpea were s i m i l a r f o r mulch
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