In-Season Nitrogen Uptake by Grain Sorghum following Legume Green Manures in Conservation Tillage Systems

The purpose of research: to improve the technology of growing flax in the Western region of Ukraine on the basis of the introduction of systems for minimizing tillage, which will increase the yield of trusts and seeds. Research methods: field, laboratory, visual and comparative calculation method. Research results: Field experiments included the study of three tillage systems (traditional, canning and mulching) and determining their impact on growth and development and yields of trusts and flax seeds. The traditional tillage system included the following operations: plowing with a reversible plow to a depth of 27 cm, cultivation with simultaneous harrowing and pre-sowing tillage. The conservation system is based on deep shelfless loosening of the soil and provided for chiseling to a depth of 40 cm, disking to a depth of 15 cm, cultivation with simultaneous harrowing, pre-sowing tillage. During the implementation of the mulching system, disking to a depth of 15 cm, cultivation with simultaneous harrowing and pre-sowing tillage with a combined unit was carried out. Tillage implements and machines were used to perform tillage operations: disc harrow BDVP-3,6, reversible plow PON-5/4, chisel PCh-3, cultivator KPSP-4, pre-sowing tillage unit LK-4. The SZ-3,6 ASTPA grain seeder was used for sowing long flax of the Kamenyar variety. Simultaneously with the sowing of flax seeds, local application of mineral fertilizers (nitroammophoska 2 c/ha) was carried out. The application of conservation tillage allows to obtain the yield of flax trust at the level of 3,5 t/ha, which is 0,4 t/ha (12.9 %) more than from the area of traditional tillage and 0,7 t/ha (25 %) in comparison with mulching. In the area with canning treatment, the seed yield was the highest and amounted to 0,64 t/ha. The difference between this option and traditional and mulching tillage reaches 0,06 t/ha (10,3 %) and 0.10 t/ha (18.5 %), respectively. Conclusions. Preservation tillage, which is based on shelf-free tillage to a depth of 40 cm and disking to a depth of 15 cm has a positive effect on plant growth and development, yield and quality of flax.

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Conservation Tillage Systems for Cotton in the Tennessee Valley

Soil Science Society of America Journal ◽

10.2136/sssaj2002.0569 ◽

2002 ◽

Vol 66 (2) ◽

pp. 569 ◽

Cited By ~ 16

Author(s):

E. B. Schwab ◽

D. W. Reeves ◽

C. H. Burmester ◽

R. L. Raper

Keyword(s):

Conservation Tillage ◽

Tillage Systems ◽

Tennessee Valley

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Weed Control in a Conservation Tillage Rotation in the Texas Blacklands

Weed Science ◽

10.1017/s0043174500060823 ◽

1987 ◽

Vol 35 (5) ◽

pp. 695-699 ◽

Cited By ~ 19

Author(s):

Steven M. Brown ◽

James M. Chandler ◽

John E. Morrison

Keyword(s):

Control Systems ◽

Weed Control ◽

Conservation Tillage ◽

Grain Sorghum ◽

Control Measures ◽

Sorghum Halepense ◽

Low Intensity ◽

No Till ◽

Primary Tillage ◽

And Control

A field experiment was conducted to evaluate weed control systems in a conservation tillage rotation of grain sorghum [Sorghum bicolor(L.) Moench.] – cotton (Gossypium hirsutumL.) – wheat (Triticum aestivumL.). Herbicide systems included fall and spring/summer inputs of high and low intensity. Tillage regimes were no-till (NT) and reduced-till (RT) systems; the latter included fall primary tillage followed by spring stale seedbed planting. Both tillage systems utilized controlled traffic lanes and wide, raised beds. Effective johnsongrass [Sorghum halepense(L.) Pers. # SORHA] control required intense herbicide inputs at one or both application periods, i.e., in the fall and/or spring/summer. Grain sorghum and cotton yields for the most intense weed control system, which included high inputs in both the fall and spring/summer, were not superior to systems that included high inputs in only one of the two application periods. Seedling johnsongrass emergence occurred before spring planting in RT (but not in NT) in 2 of 3 yr, and control measures were ineffective. After 3 yr, the predominant weeds were johnsongrass and browntop panicum (Panicum fasciculatumSw. # PANFA).

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Managing Phosphorus and Potassium Is Key in Conservation Tillage Systems

Crops & Soils ◽

10.1002/crso.20101 ◽

2021 ◽

Vol 54 (2) ◽

pp. 14-17

Author(s):

Megan Sever

Keyword(s):

Conservation Tillage ◽

Tillage Systems ◽

Phosphorus And Potassium

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Yields and nitrogen uptake of grain sorghum in various rotations, including lucerne, annual legume and long fallow

Australian Journal of Agricultural Research ◽

10.1071/ar9890255 ◽

1989 ◽

Vol 40 (2) ◽

pp. 255 ◽

Cited By ~ 1

Author(s):

ICR Holford

Keyword(s):

Nitrogen Uptake ◽

Grain Sorghum ◽

Grazing Management ◽

First Year ◽

Red Clay ◽

Beneficial Effects ◽

South Wales ◽

Establishment Method ◽

Soil Evidence

Long-term yields, nitrogen uptake and responsiveness of grain sorghum following three lucerne rotations, an annual legume rotation, long fallowing, and continuous wheat growing were measured on a black earth and red clay in northern New South Wales. The three lucerne rotations compared two methods of lucerne establishment (with or without a cover crop) and two methods of grazing management (short or extended grazing).There were large beneficial effects of lucerne leys on the first grain sorghum crop, whether they were measured as grain yield, nitrogen content of the foliage and grain, or nitrogen uptake. The effect was much smaller in the second year but it increased in the third and fourth years, in direct relation to the rainfall during the sorghum flowering period. The effect was larger on the black earth than on the red clay, reflecting the much higher lucerne yields on the former soil. Evidence indicated that the nitrogen contribution from lucerne after the first year was no greater than the nitrogen accumulated by long fallowing, and this was attributed to very low rainfall and lucerne yields during the four year ley period.The annual legume rotation suffered from drought and insect damage in most years, and following sorghum yields tended to be lower than those achieved by long fallowing.Differences in the effects of establishment method and grazing management on total lucerne yields were reflected in the differences in subsequent grain sorghum yields. Largest differences were on the black earth where extended grazing lowered the total yields of lucerne and subsequent grain sorghum. Sowing lucerne under wheat had little effect on total yields of lucerne or sorghum.

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