Interactions of zinc with banded and broadcast phosphorus fertilizer on the dry matter and seed yield of oilseed flax

1993 ◽  
Vol 73 (1) ◽  
pp. 7-16 ◽  
Author(s):  
C. A. Grant ◽  
L. D. Bailey
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Field Experiments ◽  
Growth And Yield ◽  
Dry Matter Yield ◽  
P Fertilizer ◽  
Dry Conditions ◽  
History Of ◽  
P Application ◽  
Soil Zn

Field experiments at four sites over 3 yr evaluated the effect of banded and broadcast application of fertilizer P, with and without application of Zn on dry matter yield at flowering, and seed yield of flax. Application of P fertilizer increased dry matter yield and seed yield on a number of soils even when crop growth and yield were restricted by extremely dry conditions. Banded P was more effective than broadcast or residual P in increasing flax yields. Increases in yield due to Zn application were infrequent and showed no definite relation to soil Zn or P. Increases in yields with Zn application generally occurred only where P had been broadcast that season or the year before, while decreases in yields with Zn occurred more frequently where P had been banded. The results showed that increases in flax yields in response to Zn application are most likely to occur where P fertilizer is broadcast at relatively high levels or on soils with a history of heavy P application. Key words: P placement, P, Zn, flax, yield, Zn-P interaction

Mutual Influences of Seedling Johnsongrass (Sorghum halepense), Sicklepod (Cassia obtusifolia), and Soybean (Glycine max)

Weed Science ◽  
1990 ◽  
Vol 38 (2) ◽  
pp. 139-147 ◽  
Author(s):  
Barry D. Sims ◽  
Lawrence R. Oliver
Keyword(s):  
Glycine Max ◽  
Seed Production ◽  
Seed Yield ◽  
Dry Matter ◽  
Field Experiments ◽  
Growing Season ◽  
Growth And Yield ◽  
Sorghum Halepense ◽  
Competitive Effects ◽  
Matter Production

Field experiments were conducted to evaluate competitive effects of johnsongrass and sicklepod on growth and yield of irrigated and nonirrigated soybeans. Johnsongrass reduced soybean growth early in the growing season. Sicklepod was competitive all season, but competitiveness was greatest during the soybean reproductive stage. Soybean yields were reduced 31% by sicklepod, 14% by johnsongrass, and 36% by both weeds growing together. Nonirrigated soybeans yielded less than irrigated, but percent yield reductions were similar. Johnsongrass dry matter production and seed yield were reduced more than sicklepod by soybean interference. Soybean and sicklepod interference reduced johnsongrass seed production 73 to 95%. Johnsongrass produced 245 to 1238 seeds per plant when interfering with soybeans and sicklepod. Sicklepod seeds per plant were reduced 6 to 31% by johnsongrass interference and 47 to 75% by soybeans and soybeans plus johnsongrass.

THE INFLUENCE OF Zn AND P FERTILIZER ON THE DRY MATTER YIELD AND NUTRIENT CONTENT OF FLAX (Linum usitatissimum L.) ON SOILS VARYING IN Ca AND Mg LEVEL

1989 ◽  
Vol 69 (3) ◽  
pp. 461-472 ◽  
Author(s):  
C. A. GRANT ◽  
L. D. BAILEY
Keyword(s):  
Linum Usitatissimum ◽  
Dry Matter ◽  
Nutrient Content ◽  
Yield Response ◽  
Dry Matter Yield ◽  
Chemical Parameters ◽  
Linum Usitatissimum L ◽  
Zinc Fertilization ◽  
P Fertilizer ◽  
P Application

Flax (Linum usitatissimum L.) was grown in two growth chamber experiments on a total of 16 Black Chernozemic soils varying in content of Mg, Ca, P, and Zn. On three of the soils, dry matter yield of flax increased in response to application of P. Phosphorus availability was greater with broadcast than with banded fertilizer applications. Increased yield in response to Zn application was observed on one-half of the soils. Applications of P that increased P level in the tissue above 0.46% led to consistent but nonsignificant decreases in yield and reduced the level of Zn in the tissue. Zinc fertilization increased Zn and decreased P level in the tissue. Yield response to P application was not strongly related to soil chemical parameters measured, but increased as tissue P level decreased and tissue Zn level increased. High levels of soil Mg and soil pH and high tissue levels of Mg and P were the factors most closely associated with a yield response to Zn applied with P. Key words: Flax, Linum usitatissimum, Ca, Zn, P, Mg, fertilizer placement

scholarly journals Effect of Planting Dates and Nitrogen Fertilizer on Growth and Yield of Safflower

2021 ◽  
Vol 910 (1) ◽  
pp. 012026
Author(s):  
Zainab N. M. A. Al-Zubaidy ◽  
Maher H. S. Al-Mohammad
Keyword(s):  
Seed Yield ◽  
Nitrogen Fertilizer ◽  
Harvest Index ◽  
Dry Matter ◽  
Block Design ◽  
Growth And Yield ◽  
Dry Matter Yield ◽  
Planting Dates ◽  
Two Factors ◽  
Significant Superiority

Abstract A field experiment was carried out during winter agricultural season 2020/2021 in Babylon Governorate in at Tajieh region, southeast of Hilla city, to study the effect of planting dates and nitrogen fertilizer on the growth and yield of safflower. The experiment included two factors: planting dates (1 and 15 November and 1 December), and nitrogen fertilizer at levels (0, 90, 120 and 150 kgN.ha-1), the treatments were distributed in a factorial experiment with a randomized completely block design (RCBD) with three replicates. The results showed significant superiority of planting date at December 1 on most growth and yield components parameters, it recorded the highest averages on seed yield, dry matter yield and harvest index amounted to 1576.2, 6126.0 kg.ha-1 and 25.6% respectively. However, nitrogen fertilizer at concentration 150 kg N.ha-1 affected all growth and yield and its components, it gave the highest averages for seed yield, dry matter yield and harvest index amounted to 1762.2, 6626.8 kg.ha-1 and 26.6%, respectively.

INFLUENCE OF SOIL MASS AND DIMENSIONS ON ZINC RESPONSE IN CORN (Zea mays)

1983 ◽  
Vol 63 (3) ◽  
pp. 651-655
Author(s):  
G. J. RACZ ◽  
A. S. NYAKI ◽  
L. A. LOEWEN-RUDGERS
Keyword(s):  
Zea Mays ◽  
Key Words ◽  
Dry Matter ◽  
Field Experiments ◽  
Fine Sand ◽  
Soil Mass ◽  
Dry Matter Yield ◽  
Zn Uptake ◽  
Soil Zn ◽  
Extractable Zn

Zn increased shoot dry matter yield of 62-day-old corn grown in the greenhouse on Almasippi loamy fine sand (Gleyed Carbonated Rego Black) containing 0.77 ppm DTPA-extractable Zn whereas corn in the field on the same soil had not responded to Zn. Soil mass or dimensions had little influence upon degree of response to Zn. When no Zn was applied, Zn uptake was not influenced by soil mass, suggesting that the amount of plant-available soil Zn did not increase with increasing soil mass. Results from this study provided little evidence that restricted soil mass, limiting the amount of available soil Zn, was the primary cause of greater response to Zn fertilization in pot as compared to field experiments. Key words: Corn, soil-mass, zinc

Plant growth and seed yield of sorghum when intercropped with legumes

1986 ◽  
Vol 107 (3) ◽  
pp. 621-627 ◽  
Author(s):  
S. K. Bandyopadhyay ◽  
R. De
Keyword(s):  
Seed Yield ◽  
Dry Matter ◽  
Field Experiments ◽  
Growth And Yield ◽  
North India ◽  
Physiological Factors ◽  
Area Index ◽  
Factors Affecting ◽  
Matter Production ◽  
1000 Grain Weight

SUMMARYField experiments made for 2 years under semi-arid unirrigated conditions of north India examined the physiological factors affecting the growth and yield of sorghum when intercropped with groundnut (Arachis hypogaea), mung (Vigna radiata) or cow pea (V. unguiculata). Dry-matter production and leaf area index of sorghum were increased when intercropped with any of the legumes. The mixture advantage was reflected in delaying the senescence of sorghum leaves. Maximum grain and stover yields of sorghum were obtained in a mixture with mung or cow pea. The higher seed yield resulted from more seeds per panicle and greater panicle and 1000-grain weight.

Nitrogen and phosphorus fertility management for desi and kabuli chickpea

2005 ◽  
Vol 85 (1) ◽  
pp. 73-79 ◽  
Author(s):  
Fran L. Walley ◽  
Steve Kyei-Boahen ◽  
Garry Hnatowich ◽  
Craig Stevenson
Keyword(s):  
Seed Yield ◽  
Vegetative Growth ◽  
Field Experiments ◽  
Rapid Expansion ◽  
Growth And Yield ◽  
Grain Legume ◽  
Nitrogen And Phosphorus ◽  
P Accumulation ◽  
P Application ◽  
Yield Responses

Chickpea (Cicer arietinum L.) is a relatively new crop in Saskatchewan and acreage has undergone a rapid expansion during the past decade. However, uncertainty remains regarding growth and yield responses of this grain legume to N and P fertilization under the semiarid environment of Saskatchewan. Field experiments were conducted at various locations in Saskatchewan to investigate chick pea response to starter N (0, 15, 30, and 45 kg N ha-1) and P (0, 20 and 40 kg P2O5 ha-1) using desi cv. Myles and kabuli cv. Sanford. Starter N was side banded (2.5 cm to the side and 4 cm below the seed) and the P was placed in the seed row or side banded. Starter N promoted early vegetative growth of both desi and kabuli chickpea, but kabuli seed yield was unaffected by N application. Application of 30 or 45 kg N ha-1 enhanced desi yield by as much as 221 kg ha-1. Starter N reduced N2 fixation by kabuli chickpea whereas N2 fixation by desi apparently was not as sensitive to inorganic N. Phosphorus (40 kg P2O5 ha-1) enhanced chickpea vegetative growth, although only desi seed yield was significantly enhanced (121 kg ha-1). Shoot N and P accumulation in both chickpea types generally increased with P application, but N2 fixation was unaffected. The results suggest that although N and P application had no effect on kabuli seed yield, desi yields may be optimized by the application of low rates of starter N (i.e., 30 kg N ha-1) and P (20 kg P2O5 ha-1). Key words: Chickpea, nitrogen, phosphorus, N2 fixation

Growth and yield of sugar beet on contrasting soils in relation to nitrogen supply: II. Growth, uptake and leaching of nitrogen

1975 ◽  
Vol 85 (1) ◽  
pp. 27-37 ◽  
Author(s):  
P. J. Last ◽  
A. P. Draycott
Keyword(s):  
Sugar Beet ◽  
Nitrogen Fertilizer ◽  
Dry Matter ◽  
Field Experiments ◽  
Sandy Loam ◽  
Mineral Nitrogen ◽  
Growth And Yield ◽  
Dry Matter Yield ◽  
Clay Loam ◽  
Soil Mineral Nitrogen

SUMMARYNine field experiments with sugar beet in 1968–70 tested eight amounts of nitrogen fertilizer (0–290 kg N/ha) on a shallow calcareous loam (Icknield Series), on a deep sandy loam (Newport Series) and on a heavy clay loam (Evesham Series). The amount of mineral nitrogen in the top and sub-soils was determined before applying fertilizer and at monthly intervals from May to October in plots given 0, 125 and 250 kg N/ha. The crop on these plots was also sampled at monthly intervals throughout the growing season and the yield and nitrogen uptake determined. The soil analyses indicated that in springs with average rainfall, the leaching losses of nitrogen fertilizer are negligibly small, although there was some evidence that losses may be greatest on sandy loams. In very wet springs such as 1969, with almost double the normal rainfall, losses through leaching are considerable – on average, 40 kg N/ha. Dry-matter yields and response to nitrogen fertilizer differed between the three soils consistently from year to year. On the calcareous loam, neither amount of fertilizer changed the dry-matter yield of roots in any year. The crop on the clay loam needed a small dressing and on the sandy loam a larger dressing of fertilizer for maximum root dry-matter yield. Uptake of nitrogen by the crops usually paralleled the decreases in soil mineral nitrogen although on the clay loam nearly a third of the nitrogen applied could not be accounted for in the soil or plants, suggesting that some denitrification may have taken place. When the amount of nitrogen taken up by unfertilized crops is allowed for, the percentage recovery of applied fertilizer nitrogen at final harvest ranged from 42% on the calcareous loams to 62% on the sandy loams.

scholarly journals GENETIC CONTROL OF VARIATION IN A SELECTED POPULATION OF RUSSIAN WILD RYEGRASS (ELYMUS JUNCEUS)

1976 ◽  
Vol 56 (2) ◽  
pp. 275-280
Author(s):  
T. LAWRENCE
Keyword(s):  
Genetic Control ◽  
Seed Yield ◽  
Seed Weight ◽  
Dry Matter ◽  
Recurrent Selection ◽  
Direct Selection ◽  
Adult Plant ◽  
Dry Matter Yield ◽  
Seedling Characters ◽  
Additive Control

Progenies from a five-genotype diallel cross in Russian wild ryegrass, Elymus junceus Fisch., were studied to assess the pattern of genetic control for F1 seed weight and a number of seedling and adult plant characters. Variation in F1 seed weight was largely determined by the maternal parent, but some control by the pollen parent was apparent. Of the seedling characters, days to emerge, rate of leaf appearance, rate of tiller appearance, and seedling dry matter yield, only days to emerge showed additive variance which is amenable to direct selection. The other three characters could be most easily exploited by a recurrent selection program. The adult plant characters, date of inflorescence appearance, P content of the forage, and organic matter digestibility indicated strong additive control which is amenable to direct selection. Dry matter yield and seed yield also showed strong additive control which was accompanied by specific combining ability and weak maternal effects suggesting good progress should be possible by direct selection methods but crossing the selections in a diallel fashion prior to formation of synthetics might be desirable. The seedling characters, rate of leaf and tiller appearance and seedling dry matter yield were interrelated and associated with adult plant yield, thus offering the possibility of screening seedlings for these characters in a recurrent selection program for improved forage or seed yield.

Effects of potassium and magnesium fertilizers on yield and size distribution of potatoes

1973 ◽  
Vol 80 (3) ◽  
pp. 369-373 ◽  
Author(s):  
K. Simpson ◽  
P. Crooks ◽  
S. McIntosh
Keyword(s):  
Seed Potato ◽  
Field Experiments ◽  
Total Yield ◽  
Tuber Initiation ◽  
Factorial Experiments ◽  
K Fertilizer ◽  
Dry Conditions ◽  
History Of ◽  
Potato Crops ◽  
Low K

SummaryThirteen field experiments were made during 6 years on seed-potato growing farms in south-east Scotland, comparing three rates, 70, 140 and 280 kg K/ha as potassium chloride and four rates of 0–54 kg Mg/ha as kieserite in 3 × 4 factorial experiments.More than 70 kg/ha of potassium increased total yield only at one site, which had a recent history of low K application and very low available K. Yields were decreased by more than 70 kg/ha of potassium at three sites in a season with abnormally dry conditions just after planting. Applied magnesium had little effect on total yield.Extra potassium increased ware yield but decreased seed yield, both consistently, probably because the fertilizer damaged some stolons at or before tuber initiation and fewer tubers developed. The ware/seed ratio was generally increased by extra K, but after the dry spring this ratio was unaltered or reduced. Applied magnesium had little effect on the ratio.Our results suggest that the present rates of K fertilizer, used for commercial seed-potato crops (114–138 kg K/ha) in south-east Scotland are excessive, and a much lower rate of approximately 70 kg K/ha would be adequate except on very low K sites.

scholarly journals IMPACT OF PLANT GROWTH INHIBITORS ON THE GROWTH AND YIELD OF SORGHUM

2021 ◽  
Vol 52 (6) ◽  
pp. 1431-1440
Author(s):  
N. M. Abood ◽  
E. M. SHALAL ◽  
M. I. HAMDAN
Keyword(s):  
Plant Growth ◽  
Dry Matter ◽  
Agricultural Research ◽  
Block Design ◽  
Growth And Yield ◽  
Control Treatment ◽  
Research Station ◽  
Dry Matter Yield ◽  
Growth Inhibitors ◽  
Plant Growth Inhibitors

Field experiment was carried out during the spring and fall seasons of 2019 at the Abu Ghraib Research Station of the Agricultural Research Office/ Ministry of Agriculture, was aimed to investigate the effect of plant growth inhibitors on growth and yield of several sorghum varieties .Randomized Complete Block Design within split plot arrangement with three replications was used. The main plot consists of three growth inhibitors (Cycocel, Ethiphon, and Mebiquat), which were added at stages six and eight leaf stage, in addition to the control treatment (distilled water only), the sub plot was included three cultivars (Mabrouk, Buhooth 70 and Giza 113). The results showed in both seasons significant interaction between cultivars and growth inhibitors in most of the studied traits. The plants of the variety Giza 113 sprayed with Ethiphon recorded the lowest period of reaching physiological maturity, the highest average dry matter yield, and the highest weight of 1000 grains (89.00 days, 17.32 ton ha-1, and 39.33 gm) respectively. The same variety recorded the highest content of chlorophyll in the leaves and the highest grain yield due to the effect of Mebiquat (49.50 spad, 3.93 ton ha-1. The cultivar Buhooth 70 with the effect of Cycocel achieved the highest average of dry matter yield of 33.27 ton ha-1.

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