Productivity of pigeonpea-wheat cropping systems

1988 ◽  
Vol 110 (3) ◽  
pp. 645-650
Author(s):  
K. A. Singh ◽  
Mahendra Pal
Keyword(s):  
Adverse Effect ◽  
Grain Yield ◽  
Wheat Straw ◽  
Green Manure ◽  
Agricultural Research ◽  
Cropping Systems ◽  
Indian Agricultural Research Institute ◽  
New Delhi ◽  
Agricultural Research Institute ◽  
Research Institute

SummaryStudies on productivity of pigeonpea-wheat cropping systems at the Indian Agricultural Research Institute, New Delhi during 1984–6 revealed that wheat following summer pigeonpea and given 120 kg N/ha produced 4–93, as compared with 451 t grain/ha when it succeeded kharif pigeonpea. Intercropping of preceding pigeonpea with dhaincha for green manure, fodder cowpea and greengram (grain) gave higher yields of 4·35, 397 and 3·68 t/ha respectively than the wheat following pigeonpea alone (3·20 t/ha). Similar effects on wheat straw were also recorded. Summer-sown pigeonpea produced 2·38 t grain/ha without any adverse effect of intercrops. However, kharif pigeonpea produced grain yield half of that obtained in the summer-sown crop. Further, the reductions in grain yield of kharif pigeonpea due to dhaincha, cowpea and greengram were 0·60, 0·52 and 030 t/ha, respectively. Summer pigeonpea + dhaincha-wheat and summer pigeonpea+greengram-wheat proved their superiority over other cropping systems.

Crop compatibility and spatial arrangement in sorghum-based intercropping systems

1982 ◽  
Vol 99 (3) ◽  
pp. 621-629 ◽  
Author(s):  
A. B. Waghmare ◽  
T. K. Krishnan ◽  
S. P. Singh
Keyword(s):  
Grain Yield ◽  
Field Experiments ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Spatial Arrangement ◽  
Soya Bean ◽  
New Delhi ◽  
Agricultural Research Institute ◽  
Research Institute

SUMMARYField experiments on crop compatibility and spatial arrangements in sorghum were conducted at the Indian Agricultural Research Institute, New Delhi in irrigated conditions in 1976 and 1978. Grain yield of sorghum increased when grown in association with the legumes greengram, groundnut, grain and fodder cow peas and soya bean, compared with sole sorghum. Planting of sorghum in paired rows (30:90 cm) with two rows of intercrop in the 90 cm space produced maximum yields of sorghum and intercrops.

STUDIES ON INTERCROPPING POTATO WITH FENUGREEK

2001 ◽  
Vol 49 (2) ◽  
pp. 189-191 ◽  
Author(s):  
R. Singh ◽  
R. Prasad ◽  
M. Pal
Keyword(s):  
Field Study ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Complete Loss ◽  
New Delhi ◽  
Agricultural Research Institute ◽  
Research Institute

A field study conducted for two years at the Indian Agricultural Research Institute, New Delhi showed that intercropping potato with fenugreek is highly profitable and provides some in-season income to the potato growers. It also serves as an insurance against complete loss of income when the potato prices crash in the market.

Studies on the effect of green manuring in nitrogen economy in a rice–wheat rotation using a 15N technique

1988 ◽  
Vol 111 (3) ◽  
pp. 413-417 ◽  
Author(s):  
N. N. Goswami ◽  
R. Prasad ◽  
M. C. Sarkar ◽  
S. Singh
Keyword(s):  
Green Manure ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Soil Layer ◽  
New Delhi ◽  
Rice Grain ◽  
Agricultural Research Institute ◽  
Fertilizer Nitrogen ◽  
Green Manuring ◽  
Summer Fallow

SummaryA field experiment using 15N was carried out at the Indian Agricultural Research Institute, New Delhi during the crop year 1985–1986 to investigate the possible economy in fertilizer nitrogen applied to rice and succeeding wheat by growing a summer leguminous green manure (Sesbania aculeata) and incorporating it in soil before transplanting rice. Grain and straw yields of rice with 60 kg N/ha after green manuring were slightly greater than with 120 kg N/ha after summer fallow. Thus summer green manuring can lead to an economy of 60 kg N/ha in rice. 15N analysis showed that green manuring contributed 4·7–5·6% N of the total taken up by rice and 1·9–4·8% of that taken up by the succeeding wheat, depending upon the rate of fertilizer N applied to rice.15N analysis showed that at 60 kg N/ha applied to rice, 35·4% was recovered by rice, 41% by the succeeding wheat and 16·7% was left in the 0–45 cm soil layer after summer fallow; after green manuring 32·8% N was recovered by rice, 3·0% by succeeding wheat and 22·6% was left in the soil. Thus 56·2 and 58·4% of applied N could be accounted for after summer fallow and green manuring, respectively. At 120 kg N/ha about 60–61% of applied N could be accounted for. Thus about 40–44% of N applied to rice was lost by the various loss mechanisms operating in rice fields.

Type depositories of Chalcidoidea (Hymenoptera) species described from the Department of Zoology, Aligarh Muslim University, India

Zootaxa ◽  
2011 ◽  
Vol 2786 (1) ◽  
pp. 1 ◽  
Author(s):  
MOHAMMAD HAYAT ◽  
F. R. KHAN ◽  
S. M. A. BADRUDDIN
Keyword(s):  
Natural History ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Forest Research Institute ◽  
New Delhi ◽  
Forest Research ◽  
Agricultural Research Institute ◽  
Type Specimens ◽  
History Museum ◽  
Research Institute

The type specimens of 717 chalcidoid species described by taxonomists from the Department of Zoology, Aligarh Muslim University, India, and their depositories are tabulated. Table 1 lists the holotypes and other type specimens of the species deposited in the Natural History Museum, London, England (BMNH), National Zoological Collections, Zoological Survey of India, Kolkata, India (NZSI), Forest Entomology Division, Forest Research Institute, Dehra Dun, India (FRI), National Pusa Collections, Division of Entomology, Indian Agricultural Research Institute, New Delhi, India (NPC), and the Insect Collection, Department of Zoology, Aligarh Muslim University, Aligarh, India (ZDAMU). The holotypes and lectotypes of 700 species are distributed as follows: BMNH (175), NZSI (34), FRI (28), NPC (131), and ZDAMU (332). The holotypes of 17 species could not be located in ZDAMU, but all of these species are represented by paratypes. A further 23 species whose types are not located in ZDAMU are listed in Table 2.

Systematic mixed versus pure stands of wheat genotypes

1978 ◽  
Vol 90 (2) ◽  
pp. 441-444 ◽  
Author(s):  
S. N. Sharma ◽  
Rajendra Prasad
Keyword(s):  
Grain Yield ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
New Delhi ◽  
Pure Stand ◽  
Agricultural Research Institute ◽  
Mixed Stands ◽  
Wheat Genotypes ◽  
The Mean ◽  
Made In

SummaryA field experiment was made in the wheat growing season (November–April) of 1973–4 at the Indian Agricultural Research Institute, New Delhi, to compare pure and systematic mixed stands of three wheat genotypes differing in plant height. The systematic mixed stands were made to give prismatic and columnar canopy patterns. Grain yield of wheat was significantly greater in the mixed stands than the mean yield in the pure stands; the two mixed stands did not differ significantly. The grain yield in the mixed stands was almost the same or slightly more than that of the largest yielding genotype in its pure stand. When grown in the mixed stand the tall genotype yielded more than in a pure stand but the dwarf genotype yielded less.

Effects of plant type and population density on growth and yield of chickpea

1988 ◽  
Vol 110 (1) ◽  
pp. 1-3 ◽  
Author(s):  
A. Singh ◽  
R. Prasad ◽  
R. K. Sharma
Keyword(s):  
Population Density ◽  
Field Experiment ◽  
Grain Yield ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Growth And Yield ◽  
New Delhi ◽  
Plant Type ◽  
Agricultural Research Institute ◽  
Chickpea Cultivars

SummaryA field experiment was made with chickpea (Cicer arietinum L.) at the Indian Agricultural Research Institute, New Delhi during the winters of 1984–5 and 1985–6 to study the effects of plant type and population density on growth and yield of chickpea. Cultivars BG 257, BG 261, BG 268 and BG 274 produced signficantly more grain with 1000 × 103 and 660 × 103 plants/ha, whereas the cultivar BG 209 produced the most at 500 × 103 plants/ha. Among the cultivars, BG 257 and BG 268 gave highest grain yield with 660 × 103 plants/ha.

Two new species of tribe Agalliini (Hemiptera: Cicadellidae: Megophthalminae) with note on intraspecific variations 

Zootaxa ◽  
2018 ◽  
Vol 4378 (3) ◽  
pp. 442 ◽  
Author(s):  
NARESH M. MESHRAM ◽  
STUTI RAI ◽  
N. N. RAJGOPAL ◽  
N. RAMYA
Keyword(s):  
New Species ◽  
Intraspecific Variation ◽  
Male Genitalia ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
New Delhi ◽  
Agricultural Research Institute ◽  
Indian Council ◽  
Intraspecific Variations ◽  
Two New Species

Two new species of leafhoppers, Durgades sineprocessus sp. nov. (From Himachal Pradesh: Kalpa) and Japanagallia dolabra sp. nov. (From Sikkim: Lachung) from India, are described and illustrated. Photographic illustrations of Durgades aviana Viraktamath and a detailed note on intraspecific variation in male genitalia of Austroagallia sinuata (Mulsant & Rey) are also provided. Material is deposited in the National Pusa Collection, Division of Entomology, Indian Council of Agricultural Research-Indian Agricultural Research Institute (ICAR-IARI), New Delhi, India. 

New record of the genus Baseprocessa (Hemiptera: Cicadellidae: Coelidiinae) from India with description of a new species

Zootaxa ◽  
2021 ◽  
Vol 4999 (5) ◽  
pp. 479-483
Author(s):  
NARESH M. MESHRAM ◽  
MOGILI RAMAIAH ◽  
P R SHASHANK ◽  
STUTI
Keyword(s):  
New Species ◽  
New Record ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
New Combination ◽  
New Delhi ◽  
Distribution Map ◽  
Key To Species ◽  
Agricultural Research Institute ◽  
A New Species

The coelidiinae leafhopper genus Baseprocessa Fan & Li is newly recorded from India based on the description of B. patkaensis Meshram sp. nov. and a proposed new combination, B. serratispatulata (Viraktamath & Meshram) comb. nov. Materials are deposited in the National Pusa Collection, Division of Entomology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India. Photographic illustrations, checklist and key to species of this genus along with a distribution map are also provided.

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