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.

Systematic mixed stands of spring wheat cultivars

1980 ◽  
Vol 94 (3) ◽  
pp. 529-532 ◽  
Author(s):  
R. Prasad ◽  
S. N. Sharma
Keyword(s):  
Spring Wheat ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
High Rate ◽  
New Delhi ◽  
Pure Stand ◽  
Wheat Cultivars ◽  
Nitrogen Application ◽  
Agricultural Research Institute ◽  
Mixed Stands

SummaryHeight variability in spring wheat (Triticum aestivum L.) cultivars permits growing them in systematic mixed stands and such mixtures are reported to lead to better utilization of solar radiation. Studies on such wheat mixtures are limited. A field experiment was therefore conducted for two wheat seasons (1974–5 and 1975–6) at the Indian Agricultural Research Institute, New Delhi, to compare the yield potentials of the mixed and pure stands of three spring wheat cultivars varying in plant height. Two kinds of canopy stands, namely, pyramidal and columnar, were created by making appropriate row arrangements of the cultivars while seeding. Mixed stands gave significantly higher straw yields and the grain yield was also significantly higher than the highest yielding cultivar in its pure stand at a high rate of nitrogen application (120 kg N/ha).

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.

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.

Intercropping maize and sorghum with soya beans

1980 ◽  
Vol 95 (1) ◽  
pp. 117-122 ◽  
Author(s):  
N. K. Mohta ◽  
R. De
Keyword(s):  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
Field Trials ◽  
New Delhi ◽  
Agricultural Research Institute ◽  
Land Equivalent Ratio ◽  
Sole Crop ◽  
Maize Yields ◽  
The Individual ◽  
Made In

SummaryField trials were made in the rainy seasons of 1970–4 at the Indian Agricultural Research Institute, New Delhi, to evaluate several systems of intercropping maize and sorghum with soya beans. Maize yields were not affected by intercropping with soya beans but sorghum yields were reduced. Though the yield of soya beans when intercropped was less than that of a sole crop, the combined grain yield of the two crops in an intercrop was more than the individual components. Land equivalent ratio (LER) increased to a maximum of about 48 and 31% by intercropping maize and sorghum with soya beans compared with the cereal sole crops. Maize rows planted 120 cm apart and intercropped with two rows of soya beans or sorghum planted 90 cm apart intercropped with one row of soya beans proved to be the best intercropping pattern.

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.

Sorghum-Legume Intercropping and the Effects of Nitrogen Fertilization. I. Yield and Nitrogen Uptake by Crops

1984 ◽  
Vol 20 (3) ◽  
pp. 251-259 ◽  
Author(s):  
A. B. Waghmaref ◽  
S. P. Singh
Keyword(s):  
Nitrogen Uptake ◽  
Nitrogen Fertilization ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
New Delhi ◽  
Total System ◽  
Nitrogen Application ◽  
Agricultural Research Institute ◽  
Maximum Increase ◽  
Four Levels

SUMMARYSix intercropping systems and four levels of nitrogen were compared at the Indian Agricultural Research Institute, New Delhi, in the summer rainy seasons (July-October) of 1978 and 1979. The maximum increase in sorghum yield was obtained when it was associated with fodder cowpea, followed by association with grain cowpea and greengram. The application of 40, 80 and 120 kg N ha−1 increased sorghum yield by 8.6, 16.1 and 18.2% in 1978 and by 2.9, 8.1 and 14.1% in 1979, respectively, compared with unfertilized sorghum. The nitrogen uptake by sorghum, and by the total system, was greater in sorghum-legume intercropping systems than in sole sorghum. Nitrogen application also increased the nitrogen uptake by sorghum and by the whole system.

First record of the leafhopper genus Xenovarta Viraktamath (Hemiptera, Cicadellidae, Deltocephalinae) from India with description of a new species

Zootaxa ◽  
2018 ◽  
Vol 4532 (3) ◽  
pp. 444
Author(s):  
NARESH M. MESHRAM ◽  
STUTI STUTI ◽  
TAHSEEN RAZA HASHMI
Keyword(s):  
New Species ◽  
Agricultural Research ◽  
Indian Agricultural Research Institute ◽  
First Record ◽  
Molecular Evidence ◽  
New Delhi ◽  
Key To Species ◽  
Agricultural Research Institute ◽  
First Time ◽  
A New Species

The genus Xenovarta Viraktamath is recorded from India for the first time and Xenovarta viraktamathi sp. nov. from India is described and illustrated. Materials are deposited in the National Pusa Collection, Division of Entomology, ICAR-Indian Agricultural Research Institute (IARI), New Delhi, India. A key to species of the genus are provided, with molecular evidence of the specimen in the form of partial mtCOI sequences. 

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