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  2. BBCH-scale (pea) - Wikipedia

    en.wikipedia.org/wiki/BBCH-scale_(pea)

    Shoot growing towards soil surface; hypocotyl arch visible 09: Emergence: shoot breaks through soil surface (“cracking stage”) 1: Leaf development 10: Pair of scale leaves visible 11: First true leaf (with stipules) unfolded or first tendril developed 12: 2 leaves (with stipules) unfolded or 2 tendrils developed 13

  3. Caragana arborescens - Wikipedia

    en.wikipedia.org/wiki/Caragana_arborescens

    Caragana arborescens, the Siberian peashrub, [2] Siberian pea-tree, [3] or caragana, is a species of legume native to Siberia and parts of China (Heilongjiang, Xinjiang) and neighboring Mongolia and Kazakhstan. [4] It was taken to the United States by Eurasian immigrants, who used it as a food source while travelling west.

  4. USDA soil taxonomy - Wikipedia

    en.wikipedia.org/wiki/USDA_soil_taxonomy

    The soil moisture regime, often reflective of climatic factors, is a major determinant of the productivity of terrestrial ecosystems, including agricultural systems. The soil moisture regimes are defined based on the levels of the groundwater table and the amounts of soil water available to plants during a given year in a particular region.

  5. Centrosema pubescens - Wikipedia

    en.wikipedia.org/wiki/Centrosema_pubescens

    For optimal yields it is best to grow centro in wet and humid soils, but it can grow in any soil type from a sandy to clay soil depending on its location. [8] Centro grows best in a soil pH between 4.9–5.5, but will still survive in soils with a pH as low as 4. [8] This plant is also able to endure soils with a high level of manganese. [8]

  6. Soil mechanics - Wikipedia

    en.wikipedia.org/wiki/Soil_mechanics

    If the soil particles in a sample are predominantly in a relatively narrow range of sizes, the sample is uniformly graded. If a soil sample has distinct gaps in the gradation curve, e.g., a mixture of gravel and fine sand, with no coarse sand, the sample may be gap graded. Uniformly graded and gap graded soils are both considered to be poorly ...

  7. Soil test - Wikipedia

    en.wikipedia.org/wiki/Soil_test

    In agriculture, a soil test commonly refers to the analysis of a soil sample to determine nutrient content, composition, and other characteristics such as the acidity or pH level. A soil test can determine fertility , or the expected growth potential of the soil which indicates nutrient deficiencies, potential toxicities from excessive ...

  8. Vigna subterranea - Wikipedia

    en.wikipedia.org/wiki/Vigna_subterranea

    The plant generally looks like bunched leaves arising from branched stems, which form a crown on the soil surface. Bambara is considered as a fast-growing crop. The growth cycle is between (min-max) 90–170 days [11] and under optimal conditions the cycle is about 120–150 days to pod maturity. [21] Flowers appear 40–60 days after planting ...

  9. Sesbania grandiflora - Wikipedia

    en.wikipedia.org/wiki/Sesbania_grandiflora

    Sesbania grandiflora is a leguminous tree of family Fabaceae.It is fast-growing and soft-wooded, and it grows to heights of 5–20 metres (16–66 feet). The leaves are regular and rounded, and grow to 15–30 cm (6–12 in) long, with leaflets in 10–20 pairs or more and an odd one.

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