Effect of soil ammonium nitrogen on the tillering-habit of rice plant.

1988 ◽  
Vol 57 (4) ◽  
pp. 678-684 ◽  
Author(s):  
Ho ANDO ◽  
Ken ADACHI ◽  
Makoto MINAMI ◽  
Naoki NISHIDA
Keyword(s):  
Rice Plant ◽  
Ammonium Nitrogen ◽  
Soil Ammonium

scholarly journals Effect of insect feces (Hermetia illucens) on rice growth and heavy metal migration from polluted soil to rice plant

2021 ◽  
Author(s):  
Xiaobo Wang ◽  
Nan Wu ◽  
Xiang Wu ◽  
Weina Geng ◽  
Xiaoyan Xu
Keyword(s):  
Heavy Metal ◽  
Rice Plant ◽  
Organic Fertilizer ◽  
Transport Coefficients ◽  
Ammonium Nitrogen ◽  
Weak Acid ◽  
Available Phosphorus ◽  
First Year ◽  
Rice Growth ◽  
Metal Migration

Abstract Insect feces are a new kind of biological organic fertilizer. Little is known about the influences of insect feces on rice growth and heavy metal migration from soil to rice plant. In this study, the effects of different amounts (CK (0%), T1 (2%), T2 (4%), T3 (6%), and T4 (8%) ) of black soldier fly larvae (BSFL) feces on the rice growth and the migration/accumulation of heavy metals (Cd and Pb) were investigated by pot experiments within two years. The application of insect feces remarkably increased the contents of soil pH, organic matter, ammonium nitrogen, available phosphorus and potassium. Meanwhile, the insect feces application reduced the weak acid soluble contents of soil Cd and Pb by 8.3–56.8%, but increased those in the oxidizable (by 22.4–165.7%) and residual (by 1.8–225.6%) states. Except for the T4 treatment in the first year, all fertilization treatments increased the rice yield (up to 43.7% and 195.5% higher than those of CK within two years). Moreover, the insect feces application reduced the contents of Cd (8.3%-66.7%) and Pb (6.4%-61.8%) in different parts of rice. Under the same treatment, the metal contents in each part of rice in the second year were lower than those in the first year. The insect feces application decreased the absorption coefficients (24.4%-57.5%) and secondary transport coefficients (3.6%-44.1%) of Cd and Pb by rice plant.

Localization of acid phosphatases in root cap of rice plant

1991 ◽  
Vol 49 ◽  
pp. 224-225
Author(s):  
Y. R. Chen ◽  
Y. F. Huang ◽  
W. S. Chen
Keyword(s):  
Rice Plant ◽  
Developmental Stages ◽  
Uranyl Acetate ◽  
Root Cap ◽  
Plant Tissues ◽  
Acid Phosphatases ◽  
Root Tips ◽  
Buffer Solution ◽  
Cacodylate Buffer ◽  
Ethanol Series

Acid phosphatases are widely distributed in different tisssues of various plants. Studies on subcellular localization of acid phosphatases show they might be present in cell wall, plasma lemma, mitochondria, plastid, vacuole and nucleus. However, their localization in rice cell varies with developmental stages of cells and plant tissues. In present study, acid phosphatases occurring in root cap are examined.Sliced root tips of ten-day-old rice(Oryza sativa) seedlings were fixed in 0.1M cacodylate buffer containing 2.5% glutaraldehyde for 2h, washed overnight in same buffer solution, incubated in Gomori's solution at 37° C for 90min, post-fixed in OsO4, dehydrated in ethanol series and finally embeded in Spurr's resin. Sections were doubly stained with uranyl acetate and lead citrate, and observed under Hitachi H-600 at 75 KV.

Relation between Temperature of Irrigation Water and Growth of Rice Plant

1930 ◽  
Vol 2 (2) ◽  
pp. 90-95
Author(s):  
MANTARO KONDO ◽  
TAMOTSU OKAMURA
Keyword(s):  
Irrigation Water ◽  
Rice Plant

Varietal Difference in Resistance of Rice Plant to Submersion under Water

1956 ◽  
Vol 24 (3) ◽  
pp. 151-153
Author(s):  
Noboru YAMADA ◽  
Yasuo OTA
Keyword(s):  
Rice Plant ◽  
Varietal Difference

Effect of macronutrients and time of top dressing on rice plant Ratoons.

1983 ◽  
Vol 52 (4) ◽  
pp. 468-474
Author(s):  
Masahiko ICHII ◽  
Yoshibumi IWAMOTO
Keyword(s):  
Rice Plant
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