Biologia, Microbiologia e Bioquímica do Solo

Biologia, Microbiologia e Bioquímica do Solo

$ 14.69

Add to WishlistAlready In Wishlist
Add to Wishlist
Categories: , , , , ,
A agricultura brasileira passou por mudanças tecnológicas importantes nas ultimas décadas. Durante muito tempo, o solo foi reconhecido e tratado muito mais como um simples substrato à produção agrícola do que como um sistema biológico diverso e dinâmico, bastando adicionar, via fertilizantes minerais, os elementos presentes nas cinzas dos vegetais. Predominava, especialmente na região sul do Brasil, a prática de queimar os resíduos culturais e o uso de implementos para aração e gradagem no preparo do solo, antecedendo a semeadura das culturas. Os resultados negativos desse modelo de produção não tardaram a aparecer, com alguns impactos imperceptíveis visualmente, como a redução drástica dos teores de matéria orgânica (MOS) e a degradação do estado de agregação do solo, e outros mais facilmente perceptíveis na paisagem como o assoreamento de rios e barragens e o surgimento de sulcos de erosão, os quais, em algumas situações, evoluíam para voçorocas. Ao visitarem os diferentes capítulos da presente publicação, todos atuais e informativos, tenho a certeza de que os usuários poderão comprovar com clareza a ênfase dada pelo francês Louis Pasteur, nos primórdios da Microbiologia, sobre “o papel infinitamente grande dos infinitamente pequenos”.

  • 3/8 Inch Drive Ratcheting Wrench
  • 3/8 Inch Drive 2" Bar Extension
  • 3/8 Inch Drive 4" Bar Extension
  • 3/8 Inch Drive 6" Bar Extension
  • 3/8 Inch Drive 1/4" Std Socket
  • 3/8 Inch Drive 5/16" Std Socket
  • 3/8 Inch Drive 3/8" Std Socket
  • 3/8 Inch Drive 7/16" Std Socket
  • 3/8 Inch Drive 1/2" Std Socket
  • 3/8 Inch Drive 9/16" Std Socket
  • 3/8 Inch Drive 5/8" Std Socket
  • 3/8 Inch Drive 11/16" Std Socket
  • 3/8 Inch Drive 3/4" Std Socket
  • 3/8 Inch Drive 13/16" Std Socket
  • 3/8 Inch Drive 7/8" Std Socket
  • 3/8 Inch Drive 15/16" Std Socket
  • 3/8 Inch Drive 1" Std Socket
  • Parts Box IDS System T900

All hand tools come with a lifetime warranty through Tecra Tools. Cases follow the manufacturer’s warranty and are handled via Tecra Tools. Warranties for test equipment and power tools must be addressed directly with the manufacturer for repair or replacement. Please see our full Warranty Policy.

All returns must be pre-authorized and clearly marked "returned goods" and returned within 10 days (customer is responsible for all return shipping costs). Custom Cases, Custom Kits, Special Order Items (SPC's), Replacement Parts, Clearance/Sale/Promo Code Items and Test Equipment are Non Exchangeable, Non Returnable or Non Refundable. Exceptions may apply but not without prior authorization from Tecra Tools. Please see our full Return Policy.

Pricing Policy
All prices listed on Tecra Tools' website reflect the most accurate and up-to-date information available. If an "original price" or "discounted price" is displayed, the original price represents the price at which the product was offered in the past for a reasonably substantial period of time. Any "sale" or "discount" applies for a limited time as specified on the product page. Tecra Tools reserves the right to modify or update pricing without notice. For further details about pricing, see Terms & Conditions or please contact us at 1-800-284-0808 or [email protected].

Shipping Policy
Our website does not reflect live inventory, except for a select number of items. In stock products will ship within 72 hours. If your order is in stock, but received after 2 PM MST, your order will be processed and shipped on the next business day. If you are needing a product by a certain deadline, please reach out to us at [email protected] or call 303-338-9224 and we can provide you more information. See full shipping policy at Term & Conditions.

Customer Support
For questions or concerns, please contact us at:

  • Email: [email protected]
  • Phone: 303-338-9224 or 1-800-284-0808
  • Business Hours: Mon-Thur. 8 AM – 5PM MST

California Proposition 65

Certain products may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit Chemical Exposure Warnings (Proposition 65 Warnings).

You might also like: