 ... the chemical composition of useful plants at their different stages of growth ; the comparative advantages of rotative cropping as pursued under a varying series of crops; the capacity of new plants or trees for acclimation ; the analysis of soils...  Biennial Report - 第73页1889全本阅读 - 图书信息
 | North Carolina Agricultural Experiment Station - 1887 - 880 页
...of new plants or trees for acclimation; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed...composition and digestibility of the different kinds of foods for domestic animals; the scientific and economic questions involved in the production of butter... | |
 | Arizona. Governor - 1887 - 942 页
...of new plants or trees for acclimation; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed...effects on crops of different kinds; the adaptation and values of grasses and forage plants; the composition and digestibility of different kinds of food for... | |
 | Vermont Agricultural Experiment Station - 1887 - 426 页
...of new plants or trees for acclimation; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed...comparative effects on crops of different kinds ; the adaption and value of grasses and forage plants ; the composition and digestibility of the different... | |
 | United States - 1887 - 522 页
...water; the chemical composition of manures, natural or FORTY-NINTH CONGRESS. SESS. И. Сн. 314. 18S7. artificial, with experiments designed to test their...effects on crops of different kinds; the adaptation ana value of grasses and forage plants ; the composition and digestibility of the different kinds of... | |
 | Nebraska - 1887 - 848 页
...new plants or trees for acclimation ; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed to test their comparative effects GENERAL LAWS. on crops of different kinds; the adaptation and value of grasses and forage plants; the... | |
 | Frank Seaver Billings - 1888 - 466 页
...new plants or trees for acclimation ; the analysis of soils and water ; the chemical composition of manures, natural or artificial, with experiments designed...economic questions involved in the production of butter and cheese; and such other researches or experiments bearing directly on the agricultural industry... | |
 | Vermont Agricultural Experiment Station - 1889 - 160 页
...new plants or trees for acclimation ; the analysis of soils and water ; the chemical composition of manures, natural or artificial, with experiments designed...economic questions involved in the production of butter and cheese ; and such other researches or'experiments bearing directly on the agricultural industry... | |
 | Vermont Agricultural Experiment Station - 1888 - 676 页
...new plants or trees for acclimation ; the analysis of soils and water ; the chemical composition of manures, natural or artificial, with experiments designed...economic questions involved in the production of butter and cheese ; and such other researches or experiments bearing directly on the agricultural industry... | |
 | Nebraska. State Board of Agriculture - 1888 - 372 页
...new plants or trees for acclimation ; the analysis of soils and water; the chemical composition of manures, natural or artificial, with experiments designed...economic questions involved in the production of butter and cheese ; and such other researches or experiments bearing directly on the agricultural industry... | |
 | Connecticut. Board of Education - 1888 - 1180 页
...new plants or trees for acclimation; the analysis of soils and water ; the chemical composition of manures, natural or artificial, with experiments designed...economic questions involved in the production of butter and cheese; and such other researches or experiments bearing directly on the agricultural industry... | |
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