Effect of different straw management practices on yields of continuous spring barely

Abstract

Field experiments were conducted in the maize-growing region on heavy gleic fluvisol from 1974 to 2000. Three variants of straw management (straw harvested, incorporated into soil and burned), two variants of soil tillage (conventional plough tillage to 0.22 m, shallow disc tillage to 0.12-0.15 m) and three variants of fertilization (30, 60 and 90 kg N.ha -1 ) were studied. After conventional tillage, the highest yield was obtained in the variant with burned straw (5.50 t.ha -1 ), followed by the variant with straw incorporated into soil (5.40 t.ha -1 ) and the lowest after harvested straw (5.01 t.ha -1). At shallow tillage, lower yields were assessed in all variants of straw management in comparison with conventional tillage (after straw burning 5.07 t.ha -1 , incorporation into soil 4.66 t.ha -1 and harvest 4.54 t.ha -1 ). The ranking of variants was identical to that in inversion tillage; however, the yield increased more after straw burning in comparison with its incorporation into soil. Yields increased regularly along with increasing rates of nitrogen. If long-term effects of straw incorporation on yields and yield trends were evaluated (in comparison with straw harvest), statistically significant decrease in yields was assessed after shallow in contrast with increase in yields after deeper straw incorporation.

Protein Content and Grain Yield of Malting Barley In Continuous Cropping Systems.

“…Tyto výsledky korespondují se závěry Kose [1], který spatřuje příčinu ve zpomalování rozkladu slámy za horších vláhových podmínek a tím zesílení fytotoxického účinku. Z dosažených výsledků monokulturně pěstovaného ječmene jarního (1974 až 2000) na stanovišti v Žabčicích (kukuřičná výrobní oblast) poukázali Procházková et al [24] na vliv hloubky zapravované slámy do půdy na výnosy. V této souvislosti zaznamenali statisticky průkazný pokles výnosů zrna po mělkém a naopak nárůst výnosů po hlubším zapravování slámy.…”

“…He found the cause in slowing down straw degradation under adverse moisture conditions and thus in a stronger phytotoxic effect. The results of spring barley continuous cropping (1974-2000) on a site at Žabčice (maize growing region) obtained by Procházková et al [24] revealed the effect of the depth of straw incorporation into the soil on yields. They found statistically significant reductions in grain yields after shallow straw incorporation into the soil and yield increases after deeper straw incorporation.…”

The importance of harvest residues in corn production

“…If there is no possibility for manure use, the plowing over the harvest residues is a good alternative that leads to the improved soil properties and high yields. The effect of plowing over harvest residues on the yield and quality of corn and grains was investigated worldwide and the country (Lemon-Ortega et al, 2000;Pracházková et al, 2002;Jaćimović et al, 2009;Latković et al, 2015;Jaćimović et al, 2016).…”

Fire and recovery of resting egg bank: an experimental study in paddy fields in Pathum Thani province, Thailand

“…Traditional rice cultivation in Thailand includes postharvest burning of rice straw residues to increase and sustain nutrients during the growing season. It has been demonstrated that this practice enhances rice yield components and as a result increases rice and barley yields (Procházková et al, 2002;Surekha et al, 2006).…”